feat: add findAll and findUnique resolver for universal objects (#1576)

* wip: refacto and start creating custom resolver

* feat: findMany & findUnique of a custom entity

* feat: wip pagination

* feat: initial metadata migration

* feat: universal findAll with pagination

* fix: clean small stuff in pagination

* fix: test

* fix: miss file

* feat: rename custom into universal

* feat: create metadata schema in default database

---------

Co-authored-by: Charles Bochet <charles@twenty.com>

server/src/tenant/metadata/metadata.datasource.ts

@@ -0,0 +1,25 @@
+import { ConfigService } from '@nestjs/config';
+import { TypeOrmModuleOptions } from '@nestjs/typeorm';
+
+import { DataSource, DataSourceOptions } from 'typeorm';
+import { config } from 'dotenv';
+
+config();
+
+const configService = new ConfigService();
+
+export const typeORMMetadataModuleOptions: TypeOrmModuleOptions = {
+  url: configService.get<string>('PG_DATABASE_URL')!,
+  type: 'postgres',
+  logging: false,
+  schema: 'metadata',
+  entities: [__dirname + '/**/*.entity{.ts,.js}'],
+  synchronize: false,
+  migrationsRun: true,
+  migrationsTableName: '_typeorm_migrations',
+  migrations: [__dirname + '/migrations/**/*{.ts,.js}'],
+};
+
+export const connectionSource = new DataSource(
+  typeORMMetadataModuleOptions as DataSourceOptions,
+);