fix(ui): Improve configuration form (#470)

Description

Related issue

#470 (closed)

Examples

Label changes

• Remove MUI label and implement custom one
• Highlight required fields

Form errors

• If the user doesn't fill required field and tries to submit the form, we will scroll to the first error field and focus on it
• Highlight the whole input in case of error

Checklist

• MR description has been reviewed
• MR changes are functionally tested
• MR does NOT have API/CLI changes OR there are API/CLI changes and they have been reviewed & DOCS ARE ADJUSTED (reference doc, etc)
• MR does NOT have UI changes OR there are UI changes and they have been reviewed & UX IS REVIEWED

Closes #470 (closed)