v1.5.7 Discord RPC Bug Fixes

This update was primarily made to fix some bugs with Discord RPC that have been bugging me and the community for a while. These should have been fixed now as they have been in my personal testing.

Changelog:

• Added an additional fallback state to ensure it doesn't falsely mark as paused.
• Removed some unused dependency's.
• Cleaned up the code a bit.
• Removed some unneeded functions.
• Made Electron v12.0.0-beta29 the default electron version for compatibility reasons.