Finish multiplayer support #673

Job	Run time
Android / build (Debug)	41s
Linux (arm64) / build (Debug)	1m 35s
Linux (x86_64) / build (Debug)	3m 48s
iOS / build (Debug)	1m 33s
Android / build (Release)	48s
Linux (arm64) / build (Release)	2m 30s
Linux (x86_64) / build (Release)	3m 20s
iOS / build (Release)	1m 19s
Linux (arm64) / build (RelWithDebInfo)	2m 15s
Android / build (RelWithDebInfo)	1m 1s
iOS / build (RelWithDebInfo)	4m 23s
Linux (x86_64) / build (RelWithDebInfo)	3m 24s
macOS (x86_64) / build (Debug)	5m 13s
macOS (arm64) / build (Debug)	3m 17s
macOS (x86_64) / build (Release)	4m 9s
macOS (arm64) / build (Release)	3m 55s
macOS (x86_64) / build (RelWithDebInfo)	5m 13s
tvOS / build (Debug)	1m 28s
Windows (x86_64) / build (Debug)	9m 15s
macOS (arm64) / build (RelWithDebInfo)	3m 7s
tvOS / build (Release)	1m 33s
Windows (x86_64) / build (Release)	8m 14s
tvOS / build (RelWithDebInfo)	2m 26s
Windows (x86_64) / build (RelWithDebInfo)	9m 44s
	1h 24m 11s

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