refactor: Add stories, use generated frontend client and Angular control flow

[MoritzWeber0]

• Keep position of delete button when status of T4C repositories change
• Don't cut off mat-hint text in T4C instance settings
• Add stories to T4C related components
• Migrate some parts to the new Angular control flow
• Use generated frontend API client

[github-actions[bot]]

A Storybook preview is available for commit e4e5d8872f92cdcffa27626af09fc6e89b7a8361. View Storybook View Chromatic build

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 80.64%. Comparing base (2a6e31c) to head (bb929d2).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1623 +/- ## ========================================== + Coverage 80.62% 80.64% +0.01% ========================================== Files 185 185 Lines 6084 6090 +6 Branches 678 678 ========================================== + Hits 4905 4911 +6 Misses 1030 1030 Partials 149 149 ```

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[sonarcloud[bot]]

Quality Gate passed

Issues
2 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud