feat(core): workspace embedding settings (#11801)

<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit

- **New Features**
  - Introduced "Indexer & Embedding" workspace settings to manage AI embedding for local content, including document ignoring and attachment uploads.
  - Added UI components for embedding settings, attachments, and ignored documents with pagination and deletion capabilities.
  - Provided comprehensive file-type icons for attachments.

- **Improvements**
  - Added a new tab for indexing and embedding in workspace settings navigation.
  - Included test identifiers on key UI elements to enhance automated testing.

- **Localization**
  - Added English localization strings covering all embedding-related UI text and actions.

- **Bug Fixes**
  - Enabled previously skipped end-to-end tests for embedding settings to improve reliability.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/frontend/core/src/modules/index.ts

@@ -58,6 +58,7 @@ import { configureThemeEditorModule } from './theme-editor';
 import { configureUrlModule } from './url';
 import { configureUserspaceModule } from './userspace';
 import { configureWorkspaceModule } from './workspace';
+import { configureIndexerEmbeddingModule } from './workspace-indexer-embedding';
 import { configureWorkspacePropertyModule } from './workspace-property';
 
 export function configureCommonModules(framework: Framework) {
@@ -116,4 +117,5 @@ export function configureCommonModules(framework: Framework) {
   configureIntegrationModule(framework);
   configureWorkspacePropertyModule(framework);
   configureCollectionRulesModule(framework);
+  configureIndexerEmbeddingModule(framework);
 }