Hi, I have a custom skill running with alexa echo & is working fine. Now I need to build a mobile application (android) that take input from my phone's mic, alexa processes this with my custom skill & return output that plays from my phone's speakers. In short, I need an app that replicates the echo. Is it possible? How? And if yes, please provide me the links that can be helpful. Any samples would be appreciated. Thank you.