Multi Select sessions and hotkey to make archiving easier

### Feature summary

Improve archive flow, multi select and hot key

### What problem are you trying to solve?

As heavy multi tasking user I end up creating a lot of sessions, it would make my life easier if we could improve the archive flow. Multi Select on the session list would be a good start, a hotkey/keyboard shortcut would also work!

### Proposed solution

_No response_

### Workflow impact

_No response_

### Installation context

_No response_

### Additional context

_No response_

Start by locating the desktop session list and the existing archive flow. Compare multi-select behavior with current session actions and review the keyboard shortcut conventions. Done should mean the issue's intended selection and archive interactions are defined and covered by appropriate tests, but the proposal does not specify the desired behavior.

Written by the indexing model from the issue text.