[VERIFIER] Batch solidity contracts verification (#802)

* Define Solidity batch-verify-standard-json endpoint

* Define Solidity batch-multi-part endpoint

Author: rimrakhimov

smart-contract-verifier/Cargo.lock

@@ -13,6 +13,14 @@ http:
       post: /api/v2/verifier/solidity/sources:verify-standard-json
       body: "*"
 
+    - selector: blockscout.smartContractVerifier.v2.SolidityVerifier.BatchVerifyMultiPart
+      post: /api/v2/verifier/solidity/sources:batch-verify-multi-part
+      body: "*"
+
+    - selector: blockscout.smartContractVerifier.v2.SolidityVerifier.BatchVerifyStandardJson
+      post: /api/v2/verifier/solidity/sources:batch-verify-standard-json
+      body: "*"
+
     - selector: blockscout.smartContractVerifier.v2.SolidityVerifier.ListCompilerVersions
       get: /api/v2/verifier/solidity/versions