[INFRA] Add CodeQL CI

[eseiler]

[seqan-actions]

Documentation preview available at https://docs.seqan.de/preview/seqan/seqan3/3306

[codecov[bot]]

Codecov Report

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

Project coverage is 98.13%. Comparing base (a792447) to head (d99b1ae). Report is 4 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #3306 +/- ## ======================================= Coverage 98.13% 98.13% ======================================= Files 271 271 Lines 11948 11948 Branches 104 104 ======================================= Hits 11725 11725 Misses 223 223 ```

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🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests