[TASK] Creation method step for Workspace Kind creation wizard

[paulovmr]

The first step of the Workspace Kind creation wizard will allow the user to choose if they want to create a Workspace Kind from zero (empty wizard) or if they want to upload a YAML file with the Workspace Kind definition (pre-filled wizard with the uploaded file data).

[thaorell]

I'll take this

[paulovmr]

/assign @thaorell

[paulovmr]

/area frontend
/area v2

[paulovmr]

/kind plan-task