Improve performance on metadata computation (#12785)

In this PR:

## Improve recompute metadata cache performance. We are aiming for
~100ms

Deleting relationMetadata table and FKs pointing on it
Fetching indexMetadata and indexFieldMetadata in a separate query as
typeorm is suboptimizing

## Remove caching lock

As recomputing the metadata cache is lighter, we try to stop preventing
multiple concurrent computations. This also simplifies interfaces

## Introduce self recovery mecanisms to recompute cache automatically if
corrupted

Aka getFreshObjectMetadataMaps

## custom object resolver performance improvement:  1sec to 200ms

Double check queries and indexes used while creating a custom object
Remove the queries to db to use the cached objectMetadataMap

## reduce objectMetadataMaps to 500kb
<img width="222" alt="image"
src="https://github.com/user-attachments/assets/2370dc80-49b6-4b63-8d5e-30c5ebdaa062"
/>

We used to stored 3 fieldMetadataMaps (byId, byName, byJoinColumnName).
While this is great for devXP, this is not great for performances.
Using the same mecanisme as for objectMetadataMap: we only keep byIdMap
and introduce two otherMaps to idByName, idByJoinColumnName to make the
bridge

## Add dataloader on IndexMetadata (aka indexMetadataList in the API)

## Improve field resolver performances too

## Deprecate ClientConfig

packages/twenty-server/src/engine/twenty-orm/twenty-orm.manager.ts

@@ -30,12 +30,8 @@ export class TwentyORMManager {
   async getRepository<T extends ObjectLiteral>(
     workspaceEntityOrObjectMetadataName: Type<T> | string,
   ): Promise<WorkspaceRepository<T>> {
-    const {
-      workspaceId,
-      workspaceMetadataVersion,
-      userWorkspaceId,
-      isExecutedByApiKey,
-    } = this.scopedWorkspaceContextFactory.create();
+    const { workspaceId, userWorkspaceId, isExecutedByApiKey } =
+      this.scopedWorkspaceContextFactory.create();
 
     let objectMetadataName: string;
 
@@ -51,10 +47,8 @@ export class TwentyORMManager {
       throw new Error('Workspace not found');
     }
 
-    const workspaceDataSource = await this.workspaceDataSourceFactory.create(
-      workspaceId,
-      workspaceMetadataVersion,
-    );
+    const workspaceDataSource =
+      await this.workspaceDataSourceFactory.create(workspaceId);
 
     let roleId: string | undefined;
 
@@ -79,16 +73,12 @@ export class TwentyORMManager {
   }
 
   async getDatasource() {
-    const { workspaceId, workspaceMetadataVersion } =
-      this.scopedWorkspaceContextFactory.create();
+    const { workspaceId } = this.scopedWorkspaceContextFactory.create();
 
     if (!workspaceId) {
       throw new Error('Workspace not found');
     }
 
-    return this.workspaceDataSourceFactory.create(
-      workspaceId,
-      workspaceMetadataVersion,
-    );
+    return this.workspaceDataSourceFactory.create(workspaceId);
   }
 }