locks: write-only sharded locks

[asdine]

What's being changed:

This adds a write-only (sync.Mutex) variant of the sharded locks for scenarios where only Lock/Unlock is needed and the lock performance is important.

Review checklist

• Documentation has been updated, if necessary. Link to changed documentation:
• Chaos pipeline run or not necessary. Link to pipeline:
• All new code is covered by tests where it is reasonable.
• Performance tests have been run or not necessary.

[sonarcloud]

Quality Gate failed

Failed conditions

22.9% Duplication on New Code (required ≤ 3%)

See analysis details on SonarCloud