[Feature]: P2P VPN

### Problem description

Some of our costumers have just one server/device in separate locations that they want to access.
A dedicated location costs too much for that purpose, so it would be nice to have for ex. an agent/client based gateway, that the costumer can connect to if needed.

### Proposed solution

Mesh-like feature similar to Netbird for example network:
Main Location (Datacenter)
2. Location just 1 Device (Server/Switch/Router) with own subnet
3. Location also 1 Device with own subnet
4. Location also 1 Device
5. ...

### Alternatives considered

device that connects to the main location and can be adressed from there

### Impact

Important