✨ feat: enhance admin API helpers with CRUD operations for collections and seed data management

- Added functions for creating, updating, deleting, and listing collection entries in admin API.
- Introduced seed data management for consistent test content across tests.
- Updated global setup and teardown processes to ensure seeded content is created and cleaned up.
- Refactored existing tests to utilize seeded content for improved reliability and maintainability.

api/collections/content.yml

@@ -39,6 +39,12 @@ permissions:
       post: true
       put: true
       delete: true
+  "token:${ADMIN_TOKEN}":
+    methods:
+      get: true
+      post: true
+      put: true
+      delete: true
 
 fields:
   - name: active