[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
  • 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