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/metadata-modules/flat-index-metadata/types/flat-index-metadata.type.ts

@@ -9,16 +9,18 @@ export type IndexMetadataRelationProperties =
     MetadataEntitiesRelationTarget
   >;
 
+export type FlatIndexFieldMetadata = Omit<
+  IndexFieldMetadataEntity,
+  ExtractRecordTypeOrmRelationProperties<
+    IndexFieldMetadataEntity,
+    MetadataEntitiesRelationTarget
+  >
+>;
+
 export type FlatIndexMetadata = Omit<
   IndexMetadataEntity,
   IndexMetadataRelationProperties
 > & {
   universalIdentifier: string;
-  flatIndexFieldMetadatas: Omit<
-    IndexFieldMetadataEntity,
-    ExtractRecordTypeOrmRelationProperties<
-      IndexFieldMetadataEntity,
-      MetadataEntitiesRelationTarget
-    >
-  >[];
+  flatIndexFieldMetadatas: FlatIndexFieldMetadata[];
 };