Allow plugin to manage and sync multiple CMS collections

[umar-ahmed]

Describe your use case
I am trying to build a plugin to sync posts, categories, tags, etc. from WordPress but cannot because plugins can only manage a single CMS collection at a time.

Describe the solution you'd like

Instead of creating a "synced" collection one at a time, plugins should be able to register a set of collections that are grouped under their own heading in the sidebar in the CMS

Mock-up:

This would allow for a plugin to support dynamically added collections and custom sync schedules per collection if Framer ships a solution for #75

Describe alternatives you've considered

Instruct users to manually set up a separate collection for:

1. Posts
2. Categories
3. Tags
4. Authors

Handle data references by manually syncing collections in the right order. For example, first sync Categories, Tags, and Authors before syncing Posts.