Use a single maintenance window #2580
Description
Is your feature request related to a problem? Please describe.
The current way of handling maintenance windows is really annoying due to the following:
If you have 50 services running and 3 maintenance windows (System Maintenance, Network Maintenance, and Software Maintenance), you end up with 150 entries and modifying these is a nightmare.
Uptime Kuma handles this perfectly except for the fact that it's missing an "All Monitors" option. See related feature request #2579.
Describe the solution you'd like
A single maintenance window entry with all affected monitors.
Describe alternatives you've considered
Use alternative software such as Uptime Kuma due to how much of a PITA handling maintenance windows is with Checkmate. This is probably the biggest pain point for me and one of the few things keeping me away from switching.
Additional context
Uptime Kuma example of a single maintenance entry that can be edited:
