Form validation

[cnotv]

Investigate and integrate the possibility of validating Rancher forms more effortlessly, replacing current logic.

Current plan:

• Investigate compatibility of existing branch with VeeValidate to Vue3
• Create most basic validation cases
  • LabeledInput
  • CRUResource
  • Workload
  • Create documentation using Storybook

Optionals:

• Test a validation case for each input/scenario and define outcome
• @edenhernandez-suse for remaining inputs used in the form (e.g. radio group, array list) As this operation seems to require some redesign, it will be excluded from the epic anything about new designs
• List possible migrations
• Consider evaluating form validation without requiring user action as mentioned in Allow field-level error reporting on untouched inputs #8162.