feat(contracts-bedrock): L2OutputOracle Scripts

Add phase2 function to MSD

Improvements to enable deployment practice

op-program: Add server mode

feat: One branch changesets

fix: deposited tx type RLP encoding specs

op-program: Specify client program to run as an executable

proxyd: round-robin load balancing for consensus group

Removes the env var approach to toggling between the host and client executables.

op-program: Build op-program client binary

Always builds a MIPs version of the client binary suitable for execution inside cannon.

proxyd: use health metrics slide window

op-batcher: Properly drain state on L2 reorgs