fix(rpc): Refactor `getrawtransaction` & RPC error handling #2220

Job	Run time
Generate crates matrix	8s
Check crates matrix	4s
Build zebrad crate	36m 36s
Build zebra-utils crate	17m 28s
Build zebra-test crate	1m 59s
Build zebra-state crate	22m 37s
Build zebra-script crate	3m 53s
Build zebra-scan crate	26m 33s
Build zebra-rpc crate	34m 32s
Build zebra-node-services crate	3m 53s
Build zebra-network crate	6m 51s
Build zebra-grpc crate	15m 51s
Build zebra-consensus crate	17m 38s
Build zebra-chain crate	5m 23s
Build tower-fallback crate	1m 1s
Build tower-batch-control crate	1m 20s
Open or update issues for building crates individually failures	0s
	3h 15m 47s

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