Android 11 - audio not recording when app is minimized

@erisu @infil00p @jukka @shazron @mwoghiren @clelland

I have tested the this plugin. it is working fine below android 10 version but not working in above android 10.
I want to record the phone call and save it into my server and we don't have background permission in android 11.

I have searched in google I found below url. can you please help?

https://stackoverflow.com/questions/64306994/access-microphone-camera-in-background-in-android-11

Begin with the Android implementation of cordova-plugin-media and reproduce the recording behavior on Android 10 and Android 11 while the app is minimized. Read the linked Stack Overflow discussion about background microphone access and determine whether supported permissions or behavior can meet the requested phone-call recording and server-saving outcome.

Written by the indexing model from the issue text.