feat: workspace settings page

[Xazin]

This PR is built on top of #5223

Feature Preview

TBD

PR Checklist

• [x] My code adheres to AppFlowy's Conventions
• [ ] I've listed at least one issue that this PR fixes in the description above.
• [ ] I've added a test(s) to validate changes in this PR, or this PR only contains semantic changes.
• [x] All existing tests are passing.

[github-actions[bot]]

🥷 Ninja i18n – 🛎️ Translations need to be updated

Project /project.inlang

lint rule	new reports	link
Missing translation	1575	contribute (via Fink 🐦)

[Xazin]

~~There is a bug where it fails to delete the current workspace because fetching all workspaces returns one too few workspaces for some reason.~~

appflowy_flutter/lib/workspace/application/user/user_workspace_bloc.dart:127