Add the island configuration forms

Problem/Motivation

Following ✨ [1.0.0-alpha1] Make Island plugins configurable Active we need to implement our first configurations

Proposed resolution

Component library

• components providers. By default, disable display_builder). Today, it is hardcoded in ::getDefinitionsForProvider()
• status enum: "experimental", "stable", "deprecated", "obsolete". By default, disable experimental & obsolete.
• show variant tab boolean
• show mosaic tab boolean

Block library

• providers in block library (by default, disable ui_patterns_blocks). Careful with the grouping (List, Menu, Others) in the panel

Active users

• user field & image style If not done in ✨ Add an ActiveUsers island Active