feat(beacon-node): add block state cache and checkpoint datastore

.github/workflows/CI.yml

@@ -93,6 +93,9 @@ jobs:
       - name: Run clock tests
         run: |
           zig build test:clock
+      - name: Run beacon-node tests
+        run: |
+          zig build test:beacon_node
 
       - name: Build benchmarks
         run: |

build.zig.zon

@@ -211,6 +211,10 @@
             .root_source_file = "src/fork_choice/root.zig",
             .imports = .{ .consensus_types, .config, .preset, .state_transition, .fork_types, .hex, .constants, .metrics, .time },
         },
+        .beacon_node = .{
+            .root_source_file = "src/beacon_node/root.zig",
+            .imports = .{ .consensus_types, .state_transition, .persistent_merkle_tree, .testing_allocators, .metrics, .hex, .time },
+        },
     },
     .executables = .{
         .download_era_files = .{
@@ -385,6 +389,7 @@
         .era = .{ .root_module = .era },
         .fork_choice = .{ .root_module = .fork_choice },
         .clock = .{ .root_module = .clock },
+        .beacon_node = .{ .root_module = .beacon_node },
 
         .int = .{
             .root_module = .{

src/beacon_node/chain/root.zig

@@ -0,0 +1,5 @@
+pub const state_cache = @import("state_cache/root.zig");
+
+test {
+    @import("std").testing.refAllDecls(@This());
+}