Update gradle and use rootProject variables (#140)
Update gradle and use rootProject variables (#140)

* use rootProject variables for version codes

Check rootProject for compileSdkVersion, buildToolsVersion, targetSdkVersion, and androidSupportVersion, with defaults as fallback.

* Upgrade build.gradle for newer gradle versions

blackuy/react-native-twilio-video-webrtc,blackuy/react-native-twilio-video-webrtc,blackuy/react-native-twilio-video-webrtc,gaston23/react-native-twilio-video-webrtc