Move create_hand_raise_lead route/action to a new controller

Summary

This action does not need to be in the trials_controller and if moved will simplify that layer

Plan

• Create a new controller under ee/app/controllers/subscriptions/trials path. - !115363 (merged)
• Remove temporary route for old trials path. - !115706 (merged)
  • logging of old route use
  • new route logging 1, 2
• Move controller spec for new controller to a request spec - !115706 (merged)