feat(auth): mock idp initial commit

[dclipp]

Changes proposed in this pull request

• create a mock IDP for testing purposes
• sub-tasks:
  • [X] basic UI
  • [x] dynamic configuration
  • [x] scaffold API calls
  • [x] implement API calls
  • [x] clean up UI organization
  • [x] styling
• note: Not using AdonisJS because it doesn't seem to support async client updates (will discuss)

Context

• fixes #379
• fixes #488

Checklist

• [x] Related issues linked using fixes #number
• [ ] Tests added/updated
• [ ] Documentation added
• [ ] Make sure that all checks pass

[sabineschaller]

@dclipp after our 1:1, here is what I think this should do:

• a grant is automatically seeded in pending state when the stack is fired up via docker compose
• when I navigate to localhost:3030 (location of your app), this grant's interactId and nonce are the default values in the form (but I could also input other info if I had e.g. done a grant request via postman)
• when I click "Begin step", I'm redirected to a consent screen (under the hood, the app does the get request to get the grant details)
• I accept or reject on the consent screen (under the hood, the post to the auth server happens)
• I'm redirected to the initial page that shows the grant that was issued or the rejection message

Let me know if that makes sense to you