Support new gRPC method GetTransactionResultsByBlockID

[emilic]

Is your feature request related to a problem? Please describe.
The current sdk does not support a new gRPC method GetTransactionResultsByBlockID

Describe the solution you'd like
Support GetTransactionResultsByBlockID gRPC method

Describe alternatives you've considered
N/A

Additional context

Changes to the gRPC Access API in mainnet-18

1. Added two new gRPC methods GetTransactionResultsByBlockID and GetTransactionsByBlockID
   (https://github.com/onflow/flow/blob/v0.3.1/protobuf/flow/access/access.proto#L62-L68)
2. Added three new fields to the TransactionResultResponse - transaction_id, collection_id and block_height.
   (https://github.com/onflow/flow/blob/v0.3.1/protobuf/flow/access/access.proto#L228-L230)
3. The field Parent voter IDs in the BlockHeader response has been deprecated and replaced by parent_voter_indices.
   (https://github.com/onflow/flow/blob/v0.3.1/protobuf/flow/entities/block_header.proto#L17)
4. Similar to 3, the field signer IDs in CollectionGuarantee has been replaced with signer_indices.
   (https://github.com/onflow/flow/blob/v0.3.1/protobuf/flow/entities/collection.proto#L19)
   Diff showing changes to the gRPC Access API Protobuf file (onflow/flow@v0.2.4...v0.3.1#diff-8d4ba397a66e4a94ca6776f12a3cdea75d1eba97dd494422bc9552428697ddd2)

[SaveTheRbtz]

First one was done as part of #332