Introduce python serialization for ContainerBlueprint (#5390)

### What
Cherry-picked over the Name / Visibillity changes from
`andreas/serializable-spaceviewblueprint`, so we'll need to navigate
merge conflicts there.

Standard implementation of serializers and a unit-test for them:

After talking to @Wumpf I moved some of the list-types up a level to
simplify the serialization code, but this raised an issue with
mismatched dimensions. Need to discuss if we want to remove this check
(in light of the instance-key simplification), or push things back down
to mono-components with internal lists.

### TODO

- [x] Dragging onto a Grid container breaks due to the mismatched
dimensions between the contents and the row-shares.
  - Fixed by: #5399
```
[2024-03-04T23:10:53Z WARN  re_log::result_extensions] crates/re_viewport/src/container.rs:240 Failed to create Container blueprint.: Each cell must contain either 0, 1 or `num_instances` instances, but cell 'rerun.blueprint.components.RowShare' in '/container/439ad7ad-829c-4085-833b-eb30efae0810' holds 2 instances (expected 3)
```

### Checklist
* [x] I have read and agree to [Contributor
Guide](https://github.com/rerun-io/rerun/blob/main/CONTRIBUTING.md) and
the [Code of
Conduct](https://github.com/rerun-io/rerun/blob/main/CODE_OF_CONDUCT.md)
* [x] I've included a screenshot or gif (if applicable)
* [x] I have tested the web demo (if applicable):
* Using newly built examples:
[app.rerun.io](https://app.rerun.io/pr/5390/index.html)
* Using examples from latest `main` build:
[app.rerun.io](https://app.rerun.io/pr/5390/index.html?manifest_url=https://app.rerun.io/version/main/examples_manifest.json)
* Using full set of examples from `nightly` build:
[app.rerun.io](https://app.rerun.io/pr/5390/index.html?manifest_url=https://app.rerun.io/version/nightly/examples_manifest.json)
* [x] The PR title and labels are set such as to maximize their
usefulness for the next release's CHANGELOG
* [x] If applicable, add a new check to the [release
checklist](https://github.com/rerun-io/rerun/blob/main/tests/python/release_checklist)!

- [PR Build Summary](https://build.rerun.io/pr/5390)
- [Docs
preview](https://rerun.io/preview/6964d9643faba86a734746885f4a8792da3685f1/docs)
<!--DOCS-PREVIEW-->
- [Examples
preview](https://rerun.io/preview/6964d9643faba86a734746885f4a8792da3685f1/examples)
<!--EXAMPLES-PREVIEW-->
- [Recent benchmark results](https://build.rerun.io/graphs/crates.html)
- [Wasm size tracking](https://build.rerun.io/graphs/sizes.html)

---------

Co-authored-by: Andreas Reich <[email protected]>

crates/re_types/definitions/rerun/blueprint.fbs

@@ -1,18 +1,18 @@
 include "./blueprint/components/active_tab.fbs";
 include "./blueprint/components/auto_layout.fbs";
 include "./blueprint/components/auto_space_views.fbs";
-include "./blueprint/components/column_shares.fbs";
+include "./blueprint/components/column_share.fbs";
 include "./blueprint/components/container_kind.fbs";
 include "./blueprint/components/entities_determined_by_user.fbs";
 include "./blueprint/components/entity_properties_component.fbs";
 include "./blueprint/components/grid_columns.fbs";
-include "./blueprint/components/included_contents.fbs";
+include "./blueprint/components/included_content.fbs";
 include "./blueprint/components/included_queries.fbs";
 include "./blueprint/components/included_space_view.fbs";
 include "./blueprint/components/panel_view.fbs";
 include "./blueprint/components/query_expressions.fbs";
 include "./blueprint/components/root_container.fbs";
-include "./blueprint/components/row_shares.fbs";
+include "./blueprint/components/row_share.fbs";
 include "./blueprint/components/space_view_class.fbs";
 include "./blueprint/components/space_view_maximized.fbs";
 include "./blueprint/components/space_view_origin.fbs";

crates/re_types/definitions/rerun/blueprint/archetypes/container_blueprint.fbs

@@ -23,21 +23,21 @@ table ContainerBlueprint (
     display_name: rerun.components.Name ("attr.rerun.component_optional", nullable, order: 200);
 
     /// `ContainerIds`s or `SpaceViewId`s that are children of this container.
-    contents: rerun.blueprint.components.IncludedContents ("attr.rerun.component_optional", nullable, order: 300);
+    contents: [rerun.blueprint.components.IncludedContent] ("attr.rerun.component_optional", nullable, order: 300);
 
     /// The layout shares of each column in the container.
     ///
     /// For `Horizontal` containers, the length of this list should always match the number of contents.
     ///
     /// Ignored for `Vertical` containers.
-    col_shares: rerun.blueprint.components.ColumnShares ("attr.rerun.component_optional", nullable, order: 400);
+    col_shares: [rerun.blueprint.components.ColumnShare] ("attr.rerun.component_optional", nullable, order: 400);
 
     /// The layout shares of each row of the container.
     ///
     /// For `Vertical` containers, the length of this list should always match the number of contents.
     ///
     /// Ignored for `Horizontal` containers.
-    row_shares: rerun.blueprint.components.RowShares ("attr.rerun.component_optional", nullable, order: 500);
+    row_shares: [rerun.blueprint.components.RowShare] ("attr.rerun.component_optional", nullable, order: 500);
 
     /// Which tab is active.
     ///

crates/re_types/definitions/rerun/blueprint/components/row_shares.fbs → crates/re_types/definitions/rerun/blueprint/components/column_share.fbs

@@ -9,11 +9,14 @@ namespace rerun.blueprint.components;
 
 // ---
 
-/// The layout shares of each row in the container.
-table RowShares (
+
+/// The layout share of a column in the container.
+table ColumnShare (
+    "attr.python.aliases": "float",
+    "attr.python.array_aliases": "npt.ArrayLike",
     "attr.rerun.scope": "blueprint",
     "attr.rust.derive": "Default"
 ) {
-    /// The layout shares of each row in the container.
-    shares: [float] (order: 100);
+    /// The layout shares of a column in the container.
+    share: float (order: 100);
 }

crates/re_types/definitions/rerun/blueprint/components/entities_determined_by_user.fbs

@@ -11,9 +11,11 @@ namespace rerun.blueprint.components;
 
 /// Whether the space view entities were manually edited.
 table EntitiesDeterminedByUser (
+    "attr.arrow.transparent",
     "attr.rerun.scope": "blueprint",
     "attr.rust.derive": "Default, PartialEq, Eq, PartialOrd, Ord",
-    "attr.rust.repr": "transparent"
+    "attr.rust.repr": "transparent",
+    "attr.rust.tuple_struct"
 ) {
     value: bool (order: 100);
 }

crates/re_types/definitions/rerun/blueprint/components/grid_columns.fbs

@@ -11,6 +11,7 @@ namespace rerun.blueprint.components;
 /// How many columns a grid container should have.
 table GridColumns (
     "attr.rerun.scope": "blueprint",
+    "attr.python.aliases": "int",
     "attr.rust.derive": "Default, PartialEq, Eq, PartialOrd, Ord",
     "attr.rust.override_crate": "re_viewport"
 ) {

crates/re_types/definitions/rerun/blueprint/components/included_contents.fbs → crates/re_types/definitions/rerun/blueprint/components/included_content.fbs

@@ -11,7 +11,7 @@ namespace rerun.blueprint.components;
 
 
 /// All the contents in the container.
-table IncludedContents (
+table IncludedContent (
     "attr.rerun.scope": "blueprint",
     "attr.rust.derive": "Default"
 ) {
@@ -20,5 +20,5 @@ table IncludedContents (
     /// This must be a path in the blueprint store.
     /// Typically structure as `<blueprint_registry>/<uuid>`.
     // TODO(jleibs): Maybe make this a typed UUID in the future.
-    contents: [rerun.datatypes.EntityPath] (order: 100);
+    contents: rerun.datatypes.EntityPath (order: 100);
 }

crates/re_types/definitions/rerun/blueprint/components/column_shares.fbs → crates/re_types/definitions/rerun/blueprint/components/row_share.fbs

@@ -9,12 +9,13 @@ namespace rerun.blueprint.components;
 
 // ---
 
-
-/// The layout shares of each column in the container.
-table ColumnShares (
+/// The layout share of a row in the container.
+table RowShare (
+    "attr.python.aliases": "float",
+    "attr.python.array_aliases": "npt.ArrayLike",
     "attr.rerun.scope": "blueprint",
     "attr.rust.derive": "Default"
 ) {
-    /// The layout shares of each column in the container.
-    shares: [float] (order: 100);
+    /// The layout share of a row in the container.
+    share: float (order: 100);
 }

crates/re_types/definitions/rerun/blueprint/components/visible.fbs

@@ -13,6 +13,7 @@ namespace rerun.blueprint.components;
 struct Visible (
   "attr.arrow.transparent",
   "attr.rerun.scope": "blueprint",
+  "attr.python.aliases": "bool",
   "attr.rust.derive": "Copy, PartialEq, Eq",
   "attr.rust.repr": "transparent",
   "attr.rust.tuple_struct"

crates/re_types/definitions/rerun/datatypes/entity_path.fbs

@@ -13,6 +13,8 @@ namespace rerun.datatypes;
 /// A path to an entity in the `DataStore`.
 table EntityPath  (
   "attr.arrow.transparent",
+  "attr.python.aliases": "str",
+  "attr.python.array_aliases": "Sequence[str]",
   "attr.rust.derive": "PartialEq, Eq, PartialOrd, Ord, Default",
   "attr.rust.repr": "transparent",
   "attr.rust.tuple_struct",