gpsd: GPS locating daemon

On thox, determining the device’s position and helping other devices to find their position is permitted through the GPS daemon.

Todo

Link to the GPS protocol; see GPS protocol.

Todo

Have a configuration for it, telling it the following information:

• Should we use the protocol to get our position?

• What is our fallback, as a 3D Vector?

• Should we share our position through the protocol.

Describe what we mean by peer-to-peer, mostly in case of wireless modems only and no ender modems (since the latter are far too powerful…).

Say its a bad idea to share the position when thox runs on a pocket computer.

Manage position updates on turtle events.