[FR] Show all spaces in sidebar

### Description

Is it possible to show all spaces in the sidebar instead of having the jump menu?

https://www.reddit.com/r/AppFlowy/comments/1fakhpc/show_all_spaces_in_sidebar/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button

### Impact

Found this as I have the same question. This is keeping me from using this app as this seems really illogical to be unable to pin them or keep multiple open at the same time.

### Additional Context

_No response_