investigate using iosrtc plugin as basis, possibly improve maintainability

[aoberoi]

great suggestion from community member @mark-veenstra.

here are the relevant repos:

• https://github.com/eface2face/cordova-plugin-iosrtc
• https://github.com/eface2face/rtcninja.js

if there are any takers on this investigation, this issue would be a good place to share information and discuss.

[mark-veenstra]

Already started a project, which is better maintained because of the use of existing software and the use of opentok.js: https://github.com/aoberoi/cordova-plugin-opentokjs