seer evm generate: Deploy methods should store deployment information

[zomglings]

By default, the deployment information (e.g. deployed contract address, deployer address, bytecode hash, size, etc.) should be stored in the ~/.seer/<chain_id>/<contract address>.json directory.

But there should also be a --outfile option that allows users to override the path at which the deployment information is stored.

[zomglings]

Whoever works on this issue has latitude to define the format of the JSON file. It's more important to just put something like this in place first and then tweak the format as we add more functionality to seer (e.g. proxy contract deployments and management).