feat: Add global 'Run All Active Backups' button

What problem will this feature address?

Currently, Dokploy requires users to navigate to each individual application, database, or volume to trigger a manual backup. For servers running multiple active services, verifying or forcing an immediate backup before server maintenance, kernel updates, or migrations is tedious and error-prone.

Describe the solution you'd like

I would like a global "Run All Active Backups" button in the main Backups panel or the cluster Dashboard. Clicking this button would automatically queue and trigger all active database and volume backup schedules simultaneously (or sequentially) without overriding their individual automated cron patterns.

Describe alternatives you've considered

Manual click-throughs: Manually going through dozens of services to click "Backup Now" one by one, which takes time and opens up room for human error.

Additional context

This feature would bring Dokploy closer in line with robust cluster management tools, making it significantly safer for users to perform quick backups right before executing server reboots or major Dokploy version upgrades.

Will you send a PR to implement it?

No

No files or tests are named. Start by locating the main Backups panel or cluster Dashboard and tracing the existing individual “Backup Now” flows for database and volume services. Done means a global control can trigger all active backup schedules without changing their automated cron patterns.