ActionGroup-based serialization format for Orchard v6 #401

Job	Run time
Latest build on ubuntu-latest	1m 11s
Test on Linux	7m 17s
Latest build on windows-latest	2m 43s
Test Orchard on Linux	7m 21s
Latest build on macOS-latest	1m 6s
Bitrot check	1m 20s
Test NU6 on Linux	4m 27s
Test on macOS	7m 43s
Build target wasm32-wasi	1m 7s
Test Orchard on macOS	7m 25s
Check ZFuture build on Linux	23s
Test on Windows	10m 36s
Check ZFuture build on macOS	32s
Clippy (MSRV)	1m 13s
Test Orchard on Windows	12m 20s
Check ZFuture build on Windows	2m 30s
Test NU6 on Windows	8m 5s
Clippy (beta)	12s
Code coverage	6m 13s
Intra-doc links	1m 29s
Rustfmt	15s
protobuf consistency	56s
UUID validity	6s
	1h 26m 30s

Provide feedback