* Adds scan method
* fix clippy warning
* Skip empty results and don't panic if the gRPC client disconnects
* moves `Results` request above `SubscribeResults` request to avoid duplicate results.
* returns early if there's a send error when sending initial results and updates response type
* move responder buffer size to const
* Adds a snapshot test for the `scan` method
* updates snapshots
* add `zebra-grpc` crate
* add missing fields
* convert to a lib
* add zebra-scan and tonic as depenency
* add a getinfo grpc
* remove zebra-scanner dependency
* Adds scan_service field to scanner grpc server
* remove dependency
* test launching the grpc server from the zebra-scan crate (not building)
* fix async issue
* fixes build issues
* add binary for manual testing
* try fix try run
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Co-authored-by: Arya <aryasolhi@gmail.com>