Autonomy takeover of navigation if network connection lost

[DingoOz]

Story: As a base station controller I want the rover to move itself back into range of the Wifi connection if the Wifi connection drops out

DoD: Detects a loss of significant network connectivity and will safely move the rover until network connectivity is restored.

Features/Functions:
This should be one or more nodes in the Autonomy package.
This node should be able to monitor network connectivity continuously.
This node should be able to detect a significant degradation of network connectivity.
This node should not block teleoperation
This node could keep a historical record of strong network connectivity locations and use this for optimal navigation for connection.

Dependencies:
Nav2 node is running
iwtools are installed on Ubuntu on the Orin

Assumptions:
The SSID of the network is static and known before being turned on.