Knot.x Forms use cases scenarios

[Tomasz Michalak]

Is your feature request related to a problem? Please describe.
Knot.x Forms should provide details what problems it solves:

• simple forms with error handling + csrf protection
• multi-step forms that can store state in shared storages like Redis
• complex multi-step forms that behave in different manner based on user input
• mixed front-end forms integration by proxy API (CSRF protection) defined in Open API specification

Guides for front-end and back-end integrations.

Topics to describe:

• forms graph transitions and redirects

Describe the solution you'd like
Case by case scenarios that can be reflected in Knot.x Example Project.