Multi Discord RPC

• Added application config (config.json)
  • rpcThreadUpdateInterval (default: 2000ms) -- How often should the app check if a process with an RPC app is found.
  • kbThreadDetectInterval (default: 150ms) -- How often should the app check if the keys CTRL + SHIFT + H are pressed
  • startHidden (default: false) -- If the app window should be hidden at startup