Issue 599: Connect not working on Android (#601)

* support checking h264 and notifying user

* add boolean to toggle enableH264Encoding and add docs

* address commas and semicolons in failing test

* remove unnecessary comma

* pass encodingParameters

* remove spacing

* address comments

* move map builder

* be more explicit in comment

* move it to a different place

* Change to return a list of supported codecs

* check enableH264Codec in map before getting it

Author: brycnguyen

android/src/main/java/com/twiliorn/library/CustomTwilioVideoViewManager.java

@@ -85,7 +85,7 @@ public void receiveCommand(CustomTwilioVideoView view, int commandId, @Nullable
                 boolean maintainVideoTrackInBackground = args.getBoolean(7);
                 String cameraType = args.getString(8);
                 ReadableMap encodingParameters = args.getMap(9);
-                boolean enableH264Codec = encodingParameters.getBoolean("enableH264Codec");
+                boolean enableH264Codec = encodingParameters.hasKey("enableH264Codec") ? encodingParameters.getBoolean("enableH264Codec") : false;
                 view.connectToRoomWrapper(
                     roomName,
                     accessToken,