feat(home): add new frontend system support

Migrates home plugin to support the new frontend system architecture by
introducing extension blueprints for composable homepage functionality.
Key changes:
- Add CustomHomepageWidgetBlueprint for creating installable homepage widgets
- Add CustomHomepageBlueprint for composing pages from widget extensions
- Introduce titleExtensionDataRef for NFS title handling
This attempts to bring  the home plugin up to par with other core plugins that have migrated
to the new frontend system
Signed-off-by: Adam Kunicki <kunickiaj@gmail.com>

yarn.lock

@@ -5897,6 +5897,7 @@ __metadata:
   resolution: "@backstage/plugin-home-react@workspace:plugins/home-react"
   dependencies:
     "@backstage/cli": "workspace:^"
+    "@backstage/core-compat-api": "workspace:^"
     "@backstage/core-components": "workspace:^"
     "@backstage/core-plugin-api": "workspace:^"
     "@backstage/frontend-plugin-api": "workspace:^"
@@ -5931,7 +5932,9 @@ __metadata:
     "@backstage/core-components": "workspace:^"
     "@backstage/core-plugin-api": "workspace:^"
     "@backstage/dev-utils": "workspace:^"
+    "@backstage/frontend-defaults": "workspace:^"
     "@backstage/frontend-plugin-api": "workspace:^"
+    "@backstage/plugin-catalog": "workspace:^"
     "@backstage/plugin-catalog-react": "workspace:^"
     "@backstage/plugin-home-react": "workspace:^"
     "@backstage/test-utils": "workspace:^"
@@ -30991,6 +30994,7 @@ __metadata:
     "@backstage/plugin-catalog-unprocessed-entities": "workspace:^"
     "@backstage/plugin-devtools": "workspace:^"
     "@backstage/plugin-home": "workspace:^"
+    "@backstage/plugin-home-react": "workspace:^"
     "@backstage/plugin-kubernetes": "workspace:^"
     "@backstage/plugin-kubernetes-cluster": "workspace:^"
     "@backstage/plugin-notifications": "workspace:^"