## Summary

Implements
elastic/logs-dev#111 (comment).

This adds a new "Saved Search component". The component is a wrapper
around the current Saved Search Embeddable, but uses
`ReactEmbeddableRenderer` directly to render the embeddable outside of
Dashboard contexts. It monitors changes to things like `index`,
`filters` etc and communicates these changes through the embeddable API.

For this PoC two locations were changed to use this component 1) Logs
Overview flyout 2) APM Logs tab (when the Logs Overview isn't enabled
via advanced settings).

The component itself is technically beyond a PoC, and resides in it's
own package. ~I'd like to get eyes from the Discover folks etc on the
approach, and if we're happy I can fix the remaining known issues (apart
from the mixing of columns point as I believe this exists on the roadmap
anyway) and we can merge this for the initial two replacement points.~
[Thanks Davis
👌](elastic/logs-dev#111 (comment)).

`nonPersistedDisplayOptions` is added to facilitate some configurable
options via runtime state, but without the complexity of altering the
actual saved search saved object.

On the whole I've tried to keep this as clean as possible whilst working
within the embeddable framework, outside of a dashboard context.

## Known issues

- ~"Flyout on flyout" in the logs overview flyout (e.g. triggering the
table's flyout in this context).~ Fixed with `enableFlyout` option.
- ~Filter buttons should be disabled via pills (e.g. in Summary
column).~ Fixed with `enableFilters` option.
- Summary (`_source`) column cannot be used alongside other columns,
e.g. log level, so column customisation isn't currently enabled. You'll
just get timestamp and summary. This requires changes in the Unified
Data Table. **Won't be fixed in this PR**

- We are left with this panel button that technically doesn't do
anything outside of a dashboard. I don't *think* there's an easy way to
disable this. **Won't be fixed in this PR**
![Screenshot 2024-11-20 at 11 50
43](https://github.com/user-attachments/assets/e43a47cd-e36e-4511-ba88-c928a4acd634)

## Followups

- ~The Logs Overview details state machine can be cleaned up (it doesn't
need to fetch documents etc anymore).~ The state machine no longer
fetches it's own documents. Some scaffolding is left in place as it'll
be needed for showing category details anyway.

## Example

![Screenshot 2024-11-20 at 12 20
08](https://github.com/user-attachments/assets/3b25d591-e3e2-4e8a-98a8-1bfc849d3bc1)
![Screenshot 2024-11-20 at 12 23
34](https://github.com/user-attachments/assets/a2d28036-98c5-4404-934e-2298cf4a66bf)

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>
(cherry picked from commit b0122f5)

# Conflicts:
#	.github/CODEOWNERS