Add ap_info

[justmobilize]

This moves ssid, bssid and rssi to a new network class to match wifi.radio. Also added in authmode since the call was there, but not being used.

Also made firmware_version a string, since it always needs to be formated.

Once Approved, will open PRs examples in other libraries and guides.

[justmobilize]

@dhalbert would love your thoughts on this

[dhalbert]

I like the idea of making a Radio-like` helper class. It will take up a little extra space when frozen or imported. I hope that won't be a problem on, say, Matrix Portal M4, but I think.

[dhalbert]

👍