fix(rpc): Refactor `getrawtransaction` & RPC error handling #2204

Job	Run time
Generate crates matrix	10s
Check crates matrix	8s
Build zebrad crate	35m 55s
Build zebra-utils crate	16m 13s
Build zebra-test crate	1m 26s
Build zebra-state crate	21m 51s
Build zebra-script crate	3m 8s
Build zebra-scan crate	25m 31s
Build zebra-rpc crate	34m 10s
Build zebra-node-services crate	3m 3s
Build zebra-network crate	6m 44s
Build zebra-grpc crate	15m 18s
Build zebra-consensus crate	17m 36s
Build zebra-chain crate	4m 38s
Build tower-fallback crate	58s
Build tower-batch-control crate	1m 19s
Open or update issues for building crates individually failures	0s
	3h 8m 8s

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