Safely import a template - do import

As a user, I can tell that a template has been imported successfully

AC
After import

• If Branch Management is active :
  • Branch is created
  • Import is done using the user decision (if conflicts occur)
  • Branch is checked out (if relevant)
  • The project is reloaded

• If Branch Management is not active:
  • Import is done using the user decision (if conflicts occur)
  • Tag is created on the import commit
  • The project is reloaded

• A confirmation message is shown
  • {Template title} was successfully imported. You will now be taken to the corresponding branch.
    ** {Template title}

    was successfully imported. Your project will now be reloaded. (no branch management)

• I can't delete the template, I can delete the branch instead or revert the tag

• Analytics event is sent when choosing an option
  • Category: Described according to NXS-5742
  • Event: Template onboarding documentation closed OR Template documentation opened
  • Label: [Template title]
    (goal: optimize flow)