This essentially worked for non-dev mode before but would create storage
directories that weren't actually used or needed, and it didn't work in
dev mode because it made assumptions about the presence of a worker auth
kms or not. This fixes those behaviors.
* Adds WorkerAuthStorage wrapper for worker credential encryption using nodeenrollment library.
* Adds AuthStoragePath field in worker config and dev mode to specify directory to store credentials.
* Move the server daemons into their own package
With this change the internal/server package now is dedicated to the server domain (workers and controllers) and not to the server daemons.
The hope is that this will make it easier to keep the daemons decoupled from the representation of the servers in the database.