AdHocFiltersCombobox: Collapse filters to save space

[Sergej-Vlasov]

The main idea here is to hide filters when we have many filters defined to save on space in the dashboard.

Issues:

1. Filter variable will grow until it takes up the whole line and wrap line only after its fully grown
   • this makes it tricky to determine when exactly to collapse when we have another variable in the same line:
     
2. Mechanism to uncollapse filters
   • some users might prefer to have filters uncollapsed all the time
     • how do we offer that? - add variable setting to collapse/keep uncollapsed?

Current POC PR with some guess work on when and how to collapse.
Demo from POC PR:

Screen.Recording.2024-11-08.at.11.24.49.mov

[Sergej-Vlasov]

@Ijin08 @dprokop encountered few tricky issues that I feel need discussion, so saving my work here until we can sync online/offline regarding this.