fix(rpc): Refactor the serialization of note commitment trees #1320

Job	Run time
Generate crates matrix	13s
Check crates matrix	10s
Build zebrad crate	34m 50s
Build zebra-utils crate	18m 36s
Build zebra-test crate	1m 36s
Build zebra-state crate	23m 24s
Build zebra-script crate	5m 17s
Build zebra-scan crate	21m 31s
Build zebra-rpc crate	23m 36s
Build zebra-node-services crate	3m 24s
Build zebra-network crate	7m 11s
Build zebra-grpc crate	15m 4s
Build zebra-consensus crate	19m 19s
Build zebra-chain crate	5m 26s
Build tower-fallback crate	1m 5s
Build tower-batch-control crate	1m 27s
Open or update issues for building crates individually failures	0s
	3h 2m 9s

Provide feedback