Index v2 side effects (#14567)

# Introduction
Honestly this implem is a mess, discussing a potential side effect
handler with @weiko before the build and run that would handle each side
effect per entity and operation

Handling:
- [ ] unique index is generated when a field is updated with the
`isUnique`
- [x] an index is generated when a relation is created
- [x] search vector index creation on custom object creation
- [x] renaming a field metadata or an object should re-create all
related indexes which are composed by their namings
- [x] delete object should remove any related indexes
- [x] delete field should update related indexes ( if index ends up
empty it should be removed )
- [ ] on object renaming that contains morph fields -> triggers update
field -> trigger index recompute
- [x] on update name renaming should recompute all related indexes

## TODO
- [x] Integration testing
- [ ] Refactor the index maps cache to be storing a
`idsByObjectMetadataId`
- [x] Refactor deterministic name to use order sorting
- [x] Remove flat index from flat object

## What's next

Will handle morph indexes in a new dedicated PR for the moment will
stick to this
Same for the cache improvement and uniqueness

packages/twenty-server/src/engine/workspace-flat-map-cache/workspace-flat-map-cache.module.ts

@@ -6,7 +6,9 @@ import { ViewFieldEntity } from 'src/engine/core-modules/view/entities/view-fiel
 import { ViewEntity } from 'src/engine/core-modules/view/entities/view.entity';
 import { WorkspaceFlatViewFieldMapCacheService } from 'src/engine/core-modules/view/flat-view/services/workspace-flat-view-field-map-cache.service';
 import { WorkspaceFlatViewMapCacheService } from 'src/engine/core-modules/view/flat-view/services/workspace-flat-view-map-cache.service';
+import { WorkspaceFlatIndexMapCacheService } from 'src/engine/metadata-modules/flat-index-metadata/services/workspace-flat-index-map-cache.service';
 import { WorkspaceFlatObjectMetadataMapCacheService } from 'src/engine/metadata-modules/flat-object-metadata/services/workspace-flat-object-metadata-map-cache.service';
+import { IndexMetadataEntity } from 'src/engine/metadata-modules/index-metadata/index-metadata.entity';
 import { WorkspaceMetadataCacheModule } from 'src/engine/metadata-modules/workspace-metadata-cache/workspace-metadata-cache.module';
 import { WorkspaceMetadataVersionModule } from 'src/engine/metadata-modules/workspace-metadata-version/workspace-metadata-version.module';
 import { WorkspacePermissionsCacheModule } from 'src/engine/metadata-modules/workspace-permissions-cache/workspace-permissions-cache.module';
@@ -18,19 +20,25 @@ import { WorkspaceFlatMapCacheRegistryService } from 'src/engine/workspace-flat-
     WorkspaceMetadataCacheModule,
     WorkspaceMetadataVersionModule,
     WorkspacePermissionsCacheModule,
-    TypeOrmModule.forFeature([ViewEntity, ViewFieldEntity]),
+    TypeOrmModule.forFeature([
+      ViewEntity,
+      ViewFieldEntity,
+      IndexMetadataEntity,
+    ]),
   ],
   providers: [
     WorkspaceFlatMapCacheRegistryService,
     WorkspaceFlatObjectMetadataMapCacheService,
     WorkspaceFlatViewMapCacheService,
     WorkspaceFlatViewFieldMapCacheService,
+    WorkspaceFlatIndexMapCacheService,
   ],
   exports: [
     WorkspaceFlatMapCacheRegistryService,
     WorkspaceFlatObjectMetadataMapCacheService,
     WorkspaceFlatViewMapCacheService,
     WorkspaceFlatViewFieldMapCacheService,
+    WorkspaceFlatIndexMapCacheService,
   ],
 })
 export class WorkspaceFlatMapCacheModule {}