v5.1.0: Some quality-of-life requests

Added

• The menu has been re-organized somewhat, and a new settings menu has been introduced.
• A couple new settings have been introduced:
  • You can now make capture/mapping start immediately when opening the program A new auto-start setting has been added alongside an --autostart command-line parameter. (#34)
  • You can now restore the old drums mapping behavior in ViGEmBus mode that matched a real Xbox 360 drumkit. (#38)

Changed

• The WinUSB backend is now always enabled. I thought about things and realized the option to enable/disable it really doesn't provide much benefit, as there is no real consequence to leaving it enabled.
• The packet logging and verbose message settings are no longer persistent. It is not recommended to leave these settings on, as they are for development/debugging purposes, so it doesn't make much sense to persist them across sessions.