add(chain): Impl `zcash_protocol::consensus::Parameters` for `Network` #1192

Job	Run time
Check Cargo.lock is up to date	2m 28s
Install zebrad from lockfile without cache on ubuntu-latest	8m 51s
Test stable on ubuntu-latest	33m 18s
Check deny.toml bans	28s
Test beta on ubuntu-latest	31m 7s
Check deny.toml bans --features default-release-binaries	34s
Test stable on macos-latest	36m 21s
Check deny.toml bans --all-features	29s
Test stable on windows-latest	1h 2m 44s
Check deny.toml sources	31s
Test beta on windows-latest	58m 35s
Check deny.toml sources --features default-release-binaries	51s
Check deny.toml sources --all-features	38s
Check for unused dependencies	12s
Open or update issues for OS integration failures	0s
	3h 57m 7s

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