testing rpc's for consistency

[0xalpharush]

I am wondering if this utility could be extended to identify issues such as ethereum/go-ethereum#29550 by identifying properties of interdependent RPC's and implementing them as a side-car to nodes, performing random validation against these properties as the node runs on a testnet.

For example, if one calls getTransactionReceipt the receipt should be identical to the one available in getBlockReceipts and all the transaction/block fields should be consistent. The receipt should also be able to be proven in getBlock's receipt root.

If you have any ideas or suggestions, I would be interested to get this implemented and incorporated in EF testing