feat(zebra-scan): Connect with zebrad #339

Job	Run time
Generate crates matrix	17s
Check crates matrix	4s
Build tower-batch-control crate	26s
Build tower-fallback crate	22s
Build zebra-chain crate	2m 2s
Build zebra-consensus crate	7m 31s
Build zebra-network crate	2m 11s
Build zebra-node-services crate	1m 54s
Build zebra-rpc crate	8m 7s
Build zebra-scan crate	6m 11s
Build zebra-script crate	1m 40s
Build zebra-state crate	7m 35s
Build zebra-test crate	52s
Build zebra-utils crate	7m 55s
Build zebrad crate	11m 18s
Open or update issues for building crates individually failures	0s
	58m 25s

Provide feedback