Wrap Tokio types in a configurable runtime #1023

Job	Run time
Build (x86_64-pc-windows-msvc)	6m 51s
Build (aarch64-pc-windows-msvc)	7m 16s
Build (x86_64-apple-darwin)	6m 40s
Build (aarch64-apple-darwin)	6m 25s
Build (aarch64-apple-ios)	2m 46s
Build (aarch64-apple-ios-sim)	3m 9s
Build (x86_64-unknown-linux-gnu)	3m 47s
Build (aarch64-unknown-linux-gnu)	5m 12s
Build (aarch64-linux-android)	1m 11s
Build (armv7-linux-androideabi)	56s
Build (x86_64-linux-android)	1m 26s
	45m 39s

Provide feedback