feat: add search

[nicfb]

Q	A
Bug fix?	no
New feature?	yes
Related issues	Fix #237
Has BC-break	yes
License	GNU AGPL-v3

Checklist:

• [ ] I have updated the manpages

This PR makes use of the event searching capability added to Kosmorrolib in version 1.1. It will allow users to search for specific events in a given date range.

I don't think this is 100% complete yet, but I wanted to get your feedback on it.

[Deuchnord]

Thanks!

I'll be very busy this week, I'll take a look this weekend :)