PHP Termux API: Control Android device using Termux application

This class can control Android device using Termux application.

It can execute the termux terminal emulator application from the command line and run several types of commands to control the several aspects of an Android mobile phone or table. Currently it can:

- Check the battery status
- Get the camera details
- Take a picture
- Copy text from and to the clipboard
- Retrieve user contact list
- Download files from a given URL
- Get the device location from the GPS or other device
- Send notifications to the device user
- Open URLs in the device default browser
- Share content file
- Send SMS message
- Get received SMS messages
- Get the phone information
- Show an Android toast notification
- Get the list of TTS (Text to Speach) devices
- Play text as speech
- Vibrate
- Scan WiFi devices
- Get the WiFi connection details