Update foreign table to distant table schema (#5508)

Closes #5069 back-end part

And:
- do not display schemaPendingUpdates status on remote server lists as
this call will become too costly if there are dozens of servers
- (refacto) create foreignTableService

After this is merged we will be able to delete remoteTable's
availableTables column

packages/twenty-server/src/database/typeorm/metadata/migrations/1716310822694-removeAvailableTables.ts

@@ -0,0 +1,17 @@
+import { MigrationInterface, QueryRunner } from 'typeorm';
+
+export class RemoveAvailableTables1716310822694 implements MigrationInterface {
+  name = 'RemoveAvailableTables1716310822694';
+
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(
+      `ALTER TABLE "metadata"."remoteServer" DROP COLUMN "availableTables"`,
+    );
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(
+      `ALTER TABLE "metadata"."remoteServer" ADD "availableTables" jsonb`,
+    );
+  }
+}