[TASK] Improve performance by displaying only requested content

* Restructure JSON view involved in row listing
* Add more methods to the TCA services
* Add more methods to the Module Loader
* Fix bug in Extension Manager
* Fix bug for listing all content
* Fix bug when checking columns

Change-Id: Ia2113b9bbf40616f77c94dc24e4c06d020b61a14
Releases: 0.2.0
Fixes: #52234