Improve UX for multiple input parameters in Action creation wizard

[pkosiec]

Description

Currently, when there are multiple input parameters, there is a "Save" button for each form. To reduce friction, we should send form programmatically every time an user changes the tabs.

In that way:

• the forms are sent automatically
• the "Next" button should be enabled only when all forms are valid

This task should be refined as there are open questions:

• When to send the forms - on focus change? Because the active one should be sent to unblock the Next button
  • Alternatively: we keep the "Next" button enabled always, and on click event would validate all the forms?
• How to send the forms - create array of refs and pass them to proper forms?

See the discussion #12 (comment)

Reason

The UI should be as convenient as possible to use.