[Spaces/Public/Management] Reorganize components out of `edit_space`

[tsullivan]

In a new version of the Spaces and Roles UX, the Edit Space UX and Create Space UX will be a separate screen and page component. This is enables the Edit Space UX to have a form for assigning roles to the space, which creates more complexity and introduces the need for us to go to a tabbed interface when editing a space.

This commit organizes components that will be reused across the different page components of Create Space and Edit Space.

Summary

Reorganized files to ease future work