Clean up `contracts/deploy-history` folder

[mds1]

Right now the folder is cluttered, and it contains both test deployments and production deployments with no way to discern the two. I think we should:

• Have a canonical deploys.json file in the deploy-history folder which contains production deplys
• Create a deploy-history/archive folder to hold the full set of deploy logs currently shown
• Update the deploy script to handle this change