[Feature Request] Monitor grouping and reordering feature

**Is your feature request related to a problem? Please describe.**
On the status page, all monitors are currently displayed in a fixed order. This makes it difficult to highlight or prioritize the most important monitors at the top. In larger environments, this can reduce clarity, as less relevant monitors may push critical ones further down.

**Describe the solution you'd like**
Add a feature to **create groups** and **reorder monitors** on the status page.
Users could, for example, organize monitors into groups like *Network Services*, *Web Applications*, or *Internal Systems*, and define in which order both groups and individual monitors are displayed.

**Describe alternatives you've considered**
An alternative would be sorting monitors by name or using tags to simulate grouping, but this approach lacks flexibility and does not provide visual structure.
A more user-friendly option would be **drag-and-drop reordering** in the UI, similar to how Uptime Kuma handles it.

**Additional context**
Grouping and reordering monitors would make the status page significantly more organized and easier to navigate — especially for setups with a large number of monitors.
This would improve accessibility and help critical systems stand out more clearly.
Example reference: Uptime Kuma allows rearranging monitors directly within the dashboard using drag and drop.

Best regards
Phil

The status page rendering logic is likely in the frontend, possibly using a framework like React or Vue, and the monitor data comes from a Go backend API. Start by finding the API endpoint that serves the monitor list and the frontend component that renders the status page grid. Look for existing UI components that handle lists or grids to understand how to add drag-and-drop. 'Done' means users can create groups, reorder monitors via drag-and-drop, and the order persists.

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