Feature Request: Pop Out Chat

**Is your feature request related to a problem? Please describe.**

No

**Describe the solution you'd like**

I would like to be able to click a context menu option and be able to pop out a conversation.

**Describe alternatives you've considered**

This would allow for the viewing of multiple rooms at once time scattered across multiple desktop windows or pulling out a single conversation hiding the activity of all others - IE live stream chat during a presentation.

**Additional context**
N/A

Start by finding the chat context-menu entry point and the conversation view in the relevant Element client; no file or test is identified here. Done would be a context-menu action that opens a conversation in a separate desktop window while allowing multiple rooms or one isolated conversation to remain visible.

Written by the indexing model from the issue text.