Feat: add proper queue system.

[arabcoders]

This pull request introduces a mechanism to track and prevent concurrent execution of long-running system commands and tasks via a shared cache flag. It ensures that webhook processing can detect when a command or task is running and adjusts its behavior accordingly. The changes also include new and updated tests to verify this locking and detection logic.

• Added a cache flag that is set when a system command starts and cleared when it finishes.
• Updated webhook logic to check both the task and command running cache flags before processing, and to set options to fail fast if a lock is detected.