zcash_client_sqlite: Implement Orchard scanning #4969

Job	Run time
Build target wasm32-wasi	2m 43s
Check ZFuture build on Linux	24s
Latest build on ubuntu-latest	1m 13s
Check ZFuture build on macOS	56s
Latest build on windows-latest	4m 13s
Clippy (MSRV)	3m 4s
Check ZFuture build on Windows	2m 15s
Latest build on macOS-latest	1m 58s
Bitrot check	2m 50s
Code coverage	18m 40s
Clippy (beta)	12s
Intra-doc links	3m 30s
Rustfmt	11s
protobuf consistency	2m 52s
Test on Linux	9m 11s
UUID validity	4s
Test Orchard on Linux	5m 4s
Test NU6 on Linux	9m 4s
Test on macOS	18m 56s
Test Orchard on macOS	8m 31s
Test on Windows	13m 4s
Test Orchard on Windows	9m 41s
Test NU6 on Windows	14m 23s
	2h 12m 59s

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