System to use "export service names" for e.g. separate mount management

In systemd, I like how I can make services dependent on mounts and networking.

With rustysd, I don't want a bloated PID1 so could there be a generic system to "export service names" so separate daemons can implement the networking, device and mount management for example? Without using `rsdctl start network-online.target`?

Start by reading rustysd's existing service dependency handling and the rsdctl target flow. Compare the requested exported service names with systemd's mount and networking dependencies. Done means the issue has a defined generic mechanism for separate daemons to provide service names without requiring rsdctl commands or a bloated PID1.

Written by the indexing model from the issue text.