* Initial Discord RPC support
Build with Discord Presence ON
Fix RPC detection
Fix Time elapsed on pause; will now continue to count.
* Fix CI builds with compile flag
Addressed reviews
Fix silly mistakes
Fix 'Not in-game' display
class instead of namespace
Fix
Revamped
remove redundant code
Using Pimpl pattern
* Implement Null class
* Fix config updation
* Addressed All Reviews
* externals/discord-rpc : Updated to latest commit
