Hotkey on gunslinger

Allow us to place shotgun hotkeys the same as rifle hotkeys.
Currently shotgun is locked to QWER and rifle to ASDF and giving an option for players to set both on the same hotkeys eg. both rifle and shotgun on ASDF would improve performance in my opinion.

  1. The skills are locked to whichever stance you toggle to anyway and
  2. Pistol stance already has all the skills on both sets of hotkeys
    so it should not be a problem for “overlap” or w/e issues.