devel/py-icalendar-searcher: Add py-icalendar-searcher 1.0.5

This library should contain logic for searching, filtering and sorting icalendar
data, as well as logic for storing and representing an icalendar search query.

Audience:

• This will be used for the python CalDAV client library, both for bundling search parameters together in one object, for doing client-side filtering when the server does not support the desired search query.
• This may be useful in any kind of software handling collections of calendar content and needing to do filtering or searches on it.
• This may also be useful by calendar server developers.