Changes to dependencies from a replace directive don't trigger a redeploy

[alecthomas]

eg. if you have replace foo => ../../foo and you change foo, your module will not be redeployed.

This is already possible by specifying this directory in the ftl.toml file watch list, but it would be good to have the tooling automatically do this for the user, as we're already parsing the go.mod file.

cc @KendallWeihe