feat: remove DB dependency #201
Description
The Router and VPN service do not really need a database. The current database is only used to allow the main server to be down and restore the state of both the Router and the VPN at start.
We could remove the dependency of the database on both of them. This will allow the Router and the VPN to actually work only when the main server is up, but we don't have multiple databases.
The remove of the dependency is optional and the sysadmin can decide which setup to use