Seeding Attachments, Disable ORM Logs, Seeding Parallelization (#15174)

Improvements to database seeding performance and developer experience.

**Changes:**

1. **Attachment seeding**: Add sample files (PDF, XLSX, PPTX, PNG, ZIP)
to dev seeds with proper file storage
2. **Seeding parallelization**: Process entities within batches in
parallel while respecting dependencies
3. **ORM query logging**: Replace manual logger toggling with
`ORM_QUERY_LOGGING` env var
- Values: `disabled` (default), `server-only` (for local dev), `always`
- Configured once in `core.datasource.ts`, removed from all seeder
services

**For .env:**
```bash
ORM_QUERY_LOGGING=server-only
```

Net result: Faster seeding, cleaner code (-68 lines), better local dev
experience.

packages/twenty-server/src/database/typeorm/core/core.datasource.ts

@@ -7,16 +7,32 @@ config({
   override: true,
 });
 
-const getLoggingConfig = (): LogLevel[] => {
-  if (process.env.NODE_ENV === 'development') {
-    return ['query', 'error'];
-  }
+const isRunningCommand = (): boolean => {
+  const scriptPath = process.argv[1] || '';
 
+  return scriptPath.includes('/command/command.');
+};
+
+const getLoggingConfig = (): LogLevel[] => {
   if (process.env.NODE_ENV === 'test') {
     return [];
   }
+  const ormQueryLogging = process.env.ORM_QUERY_LOGGING || 'disabled';
 
-  return ['error'];
+  switch (ormQueryLogging) {
+    case 'disabled':
+      return ['error'];
+    case 'server-only':
+      if (isRunningCommand()) {
+        return ['error'];
+      }
+
+      return ['query', 'error'];
+    case 'always':
+      return ['query', 'error'];
+    default:
+      return ['error'];
+  }
 };
 
 const isJest = process.argv.some((arg) => arg.includes('jest'));