feature: Release 2.0.0 - The great restructure

[Breee]

The provider is kinda cluttery and partially not working as expected.

• [ ] Rework the API groups and consolidate them into less ones which are more logically structured based on topic
• [ ] Rework the References of all existing resources to be correct
• [ ] Provide a migration path of for each kind that changes
• [ ] Wait for https://github.com/crossplane/upjet/issues/414 and decide how we move on
  • rewrite from scratch,
  • continue with upjet,
  • provide 2 providers (one SAML version, one OIDC version)
  • try to fix upstream terraform provider

I'm going to expand this issue to be more descriptive soon and split it into multiple issues