WIP: Bundler chain service

[lalexgap]

Currently this will connect to the bundler and submit the UserOperation, however it fails with

UserOperation: Sender=0x5FbDB2315678afecb367f032d93F642f64180aa3  Nonce=1 EntryPoint=0x5ff137d4b0fdcd49dca30c7cf57e578a026d2789 Paymaster=undefined
failed:  eth_sendUserOperation error: {"message":"account validation failed: AA23 reverted (or OOG)","code":-32500}

How to run

• In go-nitro start up anvil and the rpc clients via go run ./cmd/start-rpc-servers/main.go
• In bundler deploy the contracts and run the bundler by running yarn hardhat-deploy --network localhost && yarn run bundler --unsafe
• Create a ledger channel to trigger the SendUserOperation call by running go run ./cmd/create-ledger-channel -a 10 -c 0x111A00868581f73AB42FEEF67D235Ca09ca1E8db

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