gRPC: UTxORPC `searchUtxos` method of query service

[carbolymer]

As a gRPC user I would like to query protocol parameters using utxorpc searchUtxos query: https://utxorpc.org/query/spec/

Related upstream PR suggesting ot use searchUtxos instead of extending readUtxos with querying by an address

• feat(cardano): allow reading of UTXOs by an address utxorpc/spec#167

[github-actions]

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