Change type import rule (#13751)

Forcing "type" to be explicit, works best will rollup on the frontend to
exclude depdendencies

packages/twenty-server/src/engine/workspace-datasource/workspace-datasource.service.ts

@@ -1,6 +1,6 @@
 import { Injectable } from '@nestjs/common';
 
-import { DataSource, EntityManager } from 'typeorm';
+import { type DataSource, type EntityManager } from 'typeorm';
 
 import { TypeORMService } from 'src/database/typeorm/typeorm.service';
 import { DataSourceService } from 'src/engine/metadata-modules/data-source/data-source.service';