feature: include roles and groups from ReBAC Admin

[huwshimi]

Done

• Add the ReBAC Admin package.
• Include the component and display the roles and groups pages.
• Set up a proxy to prevent CORS issues.
• Set the base URL for all API requests.

[codecov[bot]]

Codecov Report

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

Project coverage is 74.53%. Comparing base (2dcd747) to head (4b1bc27). Report is 22 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #266 +/- ## ========================================== - Coverage 74.58% 74.53% -0.06% ========================================== Files 33 37 +4 Lines 3286 3487 +201 ========================================== + Hits 2451 2599 +148 - Misses 693 744 +51 - Partials 142 144 +2 ```

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