* WIP RPC support
* Might have windows support now, don't peek
* Windows support
* RichPresence: __SWITCH__ => DISABLE_RPC (for MOBILE_STK support)
* RichPresence: Handle JSON strings according to spec, support for addons icon
* RichPresence: use translated difficulty name
* RichPresence: disable when client_id=-1
* RichPresence: thread connection, show server name on RPC
* RichPresence: destroy on close
* RichPresence: don't compile methods at all if DISABLE_RPC
* RichPresence: fix windows compile (untested)
* RichPresence: fix for mac
* RichPresence: Linux needs MSG_NOSIGNAL still
* RichPresence: fix memory leaks, don't spam update while not connected
* RichPresence: free thread on terminate
* RichPresence: handle initial registration
* RichPresence: fix compiler warning
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