[feature]Add a date condition to execute the check

**Version and OS**
v0.50.2 on linux/docker

**Is your feature request related to a problem? Please describe.**
No

**Describe the solution you'd like**
Add a date period (not) to run a check.

**Describe the use-case and give concrete real-world examples**
I use this to check if the games I have to referee have changed. But the volleyball season is only from september till May. So June, July and August here is no data and no need to check.

**Additional context**
None

No files, tests, or entry points are named in the issue. Start by tracing how checks are scheduled and executed, then determine where a configurable date period belongs; done means a check can be configured to run only within the selected period and is skipped outside it.

Written by the indexing model from the issue text.