bundle scoring patch

[thegostep]

Change the way mev-geth performs bundle scoring to match the v0.2 spec.

The core issue is how the node handles transactions in the bundle that have a matching transaction in the txpool.

Currently, mev-geth considers two transactions with a matching nonce to be conflicting despite them having a different transaction hash and does not count the coinbase difference or the gasprice (related).

The proposed solution is to count the coinbase transfer of these transaction but not count the gas price.