main/postmarketos-base-ui: randomize MAC address with NetworkManager
Configure NetworkManager to randomize the MAC address:
- WLAN scans
- Per connection for WLAN and Ethernet.
This reduces the possible tracking that might occur based on MAC addresses with WiFi hotspots. This matches the behavior of Android: it uses a random MAC address during a WLAN scan and a random one per connection.
Blogpost: https://fedoramagazine.org/randomize-mac-address-nm/