Implement eth_getTransactionByBlockHashAndIndex and eth_getTransactionByBlockNumberAndIndex RPC endpoints

[eth_getTransactionByBlockHashAndIndex - RPC Spec](https://ethereum.github.io/execution-apis/api-documentation/#eth_getTransactionByBlockHashAndIndex)
[eth_getTransactionByBlockNumberAndIndex - RPC Spec](https://ethereum.github.io/execution-apis/api-documentation/#eth_getTransactionByBlockNumberAndIndex) 
