Add media_controls version for linux

[vmikhav]

You can use the python-uinput module to emulate the buttons in the Linux. uinput github repo
pip install python-uinput

Нou can use such code to load the required module
media_controls = __import__('toggle_play_windows')

[akionsight]

Just started a PR to do that
#6
Until accepted you can used the version I forked and built upon
https://github.com/akionsight/AndroidMediaControlsForWindowsAndLinux