automatically publish rtc builds #832

Job	Run time
Build (x86_64-pc-windows-msvc)	7m 38s
Build (aarch64-pc-windows-msvc)	7m 15s
Build (x86_64-apple-darwin)	7m 51s
Build (aarch64-apple-darwin)	7m 56s
Build (aarch64-apple-ios)	7m 46s
Build (aarch64-apple-ios-sim)	5m 29s
Build (x86_64-unknown-linux-gnu)	3m 52s
Build (aarch64-unknown-linux-gnu)	7m 27s
Build (aarch64-linux-android)	4m 10s
Build (armv7-linux-androideabi)	7m 47s
Build (x86_64-linux-android)	4m 10s
	1h 11m 21s

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