RPC implementation + FFI #1369

Job	Run time
Build (x86_64-pc-windows-msvc)	6m 0s
Build (aarch64-pc-windows-msvc)	6m 3s
Build (x86_64-apple-darwin)	7m 37s
Build (aarch64-apple-darwin)	7m 7s
Build (aarch64-apple-ios)	9m 47s
Build (aarch64-apple-ios-sim)	4m 48s
Build (x86_64-unknown-linux-gnu)	3m 46s
Build (aarch64-unknown-linux-gnu)	6m 16s
Build (aarch64-linux-android)	3m 50s
Build (armv7-linux-androideabi)	3m 41s
Build (x86_64-linux-android)	3m 52s
	1h 2m 47s

Provide feedback