Is your feature request related to a problem? Please describe.
We should support google dorking style querry parameters/filters.

Describe the solution you'd like

Examples:

• "hs1" search for exactly this string
• +hs1 force this string being in the result
• -hs1 filter this string not being in the result
• @garching filters for campus=garching
• in:mi filters, that the room/.. is contained in the mi

Describe alternatives you've considered
Not implementing this. This is not a high priority issue.

Additional context
There already is partial support in some parts for some of these issues. This part does however require a lot more work.