Add beforeJobRun Hook to Support Distributed Locking in Multi-Worker Environments

[lukyfebrianto]

We're currently running our Payload server with multiple workers (Node processes) for scalability. We've observed an issue where both workers are picking up and running the same job simultaneously, especially for scheduler jobs.

To address this, it would be incredibly helpful if Payload supported a beforeJobRun hook (or similar), which runs before the job execution begins. This would allow us to implement distributed locking (e.g., via Redis) to ensure that only one worker acquires the lock and proceeds with running the job.

Thanks in advance