[DOC] Add documentation to workfloworchestrator.org

[wouter1975]

As discuss during the partner meeting, the following informations should be added:

Orchestrator-UI

• [ ] Vision
• [ ] NextJS
  • [ ] As a prerequisite
• [ ] Component-lib
  • [ ] NPM
  • [ ] EUI
  • [ ] Explain that this the base component library
• [ ] RBAC
  • [ ] Isallowed wrapper
  • [ ] OIDC
  • [ ] Code flow with PKCE
• [ ] Uniforms
  • [x] Form page with all form field
• [ ] Extensibility
  • [ ] in example-app with an overriden menu item
  • [ ] Add a new summary card
  • [ ] Menu item
• [ ] Theme adjustment
  • [ ] Dark theme env setting
  • [ ] Your own company logo
• [ ] Extend the Getting started to include

Priorities:

• High
• Medium
• Low

[wouter1975]

Updates should be made in https://github.com/workfloworchestrator/orchestrator-core/tree/main/docs