Feature Request: ERC20 tokens/stablecoins payment as bribe

[livingrock7]

Relay bundles to specific group of miners receivingAddress who accept bribe in stable coins. Miners are structurally long on ETH but some individuals or pools may want to hedge their earnings in stable coins and/or for trading activities.

Payment router contract and Relay network can further help achieve a few key objectives:

• Bundles can define recipient address different from coinbase address and transfer tokens for execution fees. IERC20(token).transfer() ~40K gas compared to ~21K ETH bribe transfer
• Above can eliminate the need to make a uniswap trade on chain ~140K gas (ERC20 to ETH : to pay bribe and fees to self e.g mistX) in every bundle for ETH-less use cases.
• It could be very useful for searcher and their end user to pay up the bribe from tokens flowing into the bundles/from the transaction outputs.

some POCs or use cases out there like TokenPaymaster to enable end users to "pay gas fees in ERC20 tokens" involve lot of computation + getting quote and swap on chain for eth (to pay network fees in eth or refund third party relayer who paid eth fees) hence the final gas overhead is impractical to use. This feature request would solve this problem.