[CM-1367] - Added wrapper for Conversation Info View

[amntoppoKM]

Summary

• Exposed method for conversation Info View for Android and iOS
• Exposed method to close conversation screen - Android and iOS

Sample Dart code:

KommunicateFlutterPlugin.createConversationInfo({
                      "infoContent": "Checkout your ITR Summary",
                      "backgroundColor": "#000000",
                      "trailingIcon": "next",
                      "leadingIcon": "files",
                      "contentTextColor": "#FFFFFF"
                    });