[WIP][v1.32.0] Create/edit communities

Writing this down so I don't forget but to also give the community some insight as well.

My immediate plans for Summit is to support creating and editing communities from within the app. After that I will look at the user requests and try to finish those off again. Once all of that is done I'm going to be doing some fine tuning of the app.

As a daily user of the app, I think the app currently offers a decent base experience for browsing Lemmy but it's not polished; the user experience is a little bare. A lot of features can use some small adjustments to make them nicer to use.

I've been gathering ideas on how certain features can be made better over the past few weeks but this is also a great time to ask the community to bring up any slight annoyances they've had with the app.

Anyways that's all from me for now.

Changes so far:

• Update back behavior. Tapping back while on a community that is not the home community will take you back to the home community instead of exiting the app.
• Added an option to the Import & Export settings page to backup and reset your current settings.
• Added support for editing communities.
• Added support for creating communities.
• Added option to delete a community.

Update

Some of the minor changes noted here have been released as v1.31.1 so they have been moved to the v1.31.1 release post instead.