Allow user to check all checkboxes in a list with one click

There are some screens where we allow user to select multiple items in a list via checkboxes and currently only leaving space (new implementation) allows user to select/unselect all at once. I think we should have this option for every list and also we should do this according to material guidelines instead of radio buttons

| Screenshot | Location in app |
| ------------- | ------------- |
|  | Space -> add rooms |
|  | Space -> add spaces |
|  | Space -> manage rooms |
|  | Space/Room -> Settings -> Manage Access -> Edit spaces |
|  | Space -> Leave |
|  | Settings -> General -> Discovery -> Configure -> Choose Server (or tap "User vector.im" |