Audio FFI for iOS & Android

This FFI does Audio Recording and other operations like 1. Play 2.Stop
3.Pause . Also it does a cleaning/purging of the recoded data on an
explicit call.

Add AVFoundation framework in your Xcode project before building the
APK.
At time of development "prepareToRecord" function must be invoked
before you start invoking any other function.
You should pass a a file name "yourFileName.mp4" to the prepareToRecord
function, and mp4 was the format with which the audio quality was
experienced better.