Create a node.js module for Telegram

Our application allows to manage communication from various sources (messenger, twitter, sms, etc) in one place. We are looking for someone to create a module to connect with more messengers. We start with the first messenger - Telegram. Later on we would like to cooperate with the winner, to add more messengers to our application. The structure has to be as unified as possible, so below there is a documentation, that is based on one of the messengers that we already added. Keep in mind that Telegram may have a bit different functionalities, so if you encounter any trouble (additional possibilities or limited possibilities) just write us a message. We need node.js module to connect next messengers to our system. Your module have to: 1. Allow for communication with telegram for multiple users (authentication is on our side) 2. Manage incoming message from telegram 3. Manage any posback events (client typing, client clicked, etc) 4. Manage any outgoing message 5. if there is anything specific about the network to display images gallery or one image or any additional data type allowed by network you should prepare the structure for it 6. Gather information about the client that is writing Communication between them (including required functions and events) is described in attachment. Your code must be of high quality and it will be reviewed. IMPORTANT: Please send example node.js code from your previous assignments. Similar topic will be a plus.