Feature Request: WLAN interface toggle

[billz]

Is your feature request related to a problem?

Currently RaspAP will select the interface that isn't being used for the AP to configure a connection on the Wifi client page. Alternatively, the RASPI_WIFI_AP_INTERFACE setting in includes/config.php can be modified to change the default interface. Each of these options involves several steps and is non-intuitive for most users.

Describe the solution you'd like

Present the user with a WLAN interface toggle in the Wifi client UI, to allow this setting to be defined more easily.

Describe alternatives you've considered

N/A

Additional context

If the active AP interface is selected, the hostapd.conf should be updated to use the next available wireless interface. This could introduce errors, such as selecting an interface bound to an adapter that doesn't support the existing AP settings. The app should fail gracefully in this event.