[fr] Support setup/teardown

[FossPrime]

https://dove.feathersjs.com/api/application.html#setup-server

This lowers the setup needed for using vite on feathers projects. For crow support and other situations, leave the call to main if not too troublesome.

Dove also gives us the ability to do HMR with unset. We have to be careful with service.setup() calls, which may need to be manually ran after HMR events.