[feat] Add updateRemoteServer endpoint (#5148)

## Context
#4765 

Following investigations
([#5083](https://github.com/twentyhq/twenty/issues/5083)) we decided to
restrict updates of server from which zero tables have been synchronized
only

## How was it tested
Locally with /metadata
1. Updating a database that already has synchronized tables
<img width="1072" alt="Capture d’écran 2024-04-24 à 16 16 05"
src="https://github.com/twentyhq/twenty/assets/51697796/f9a84c34-2dcd-4f3c-b0bc-b710abae5021">

2. Updating a database that has no synchronized tables
<img width="843" alt="Capture d’écran 2024-04-24 à 16 17 28"
src="https://github.com/twentyhq/twenty/assets/51697796/f320fe03-a6bc-4724-bcd0-4e89d3ac31f5">
+ tested that the connection works well

packages/twenty-server/src/engine/metadata-modules/remote-server/remote-server.module.ts

@@ -6,11 +6,13 @@ import { RemoteServerEntity } from 'src/engine/metadata-modules/remote-server/re
 import { RemoteServerResolver } from 'src/engine/metadata-modules/remote-server/remote-server.resolver';
 import { RemoteServerService } from 'src/engine/metadata-modules/remote-server/remote-server.service';
 import { RemoteTableModule } from 'src/engine/metadata-modules/remote-server/remote-table/remote-table.module';
+import { WorkspaceDataSourceModule } from 'src/engine/workspace-datasource/workspace-datasource.module';
 
 @Module({
   imports: [
     TypeOrmModule.forFeature([RemoteServerEntity], 'metadata'),
     RemoteTableModule,
+    WorkspaceDataSourceModule,
   ],
   providers: [
     RemoteServerService,