Config flow, Devices dashboard, Separate sensors

Warning! this update is not backwards compatible in some places!

• Config flow
  • This integration is now set up using config flow, that means you will now set it up from Home Assistant integrations dashboard
  • Configuration migration from yaml is not implemented. That means you will have to set up the integration again, but sensor IDs should stay the same, so you don't need to update your automations (probably)
  • You no longer need to get Discord users ID's using developer mode, all users visible to bot are listed in the configuration flow and you just klick on their names
• Devices dashboard
  • Every tracked user will now create a device and entities linked to those devices in the Home Assistant devices dashboard
• Separate sensors
  • Due to a big demand, every attribute that was previously under the main sensor now creates a separate sensor, so you can easily add them to your Lovelace dashboard
    • Attributes are still present in the main sensor for backwards compatibility
• Channel reactions tracking
  • You can now track which user last added a reaction in the selected Discord channels
  • Can be used for eg. tracking if somebody reaction-voted on your post
• Fixes
  • Small various fixes regarding game images