* contracts-bedrock: deployer as msg.sender

Use a special deployer account for the execution of the L2 genesis
script. This should remove the need to set the sender as part
of the devnet.

* devnet: simplify

* contracts-bedrock: fix deployer

* contracts-bedrock: fix build

* build: fix

* contracts-bedrock: more generic prank

* contracts-bedrock: attempt fixup

* contracts-bedrock: set deployer nonce to 0

* contracts-bedrock: prank in genesis

* contracts-bedrock: fix build

* contracts-bedrock: fixup

* contracts-bedrock: fixup

* contracts-bedrock: fixup