Add menus and icons to the Telegram app

You should be familiar with the Telegram Android App version 3.8.1 or upper. I want to do the followings: 1: add "Gifts" menu item to the settings. It should brig up an activity 2: in the contact list, in front of each contact there should be an icon (that means send gift). Tapping on the icon should bring up an external activity. for example app the Gmail's new email draft. The icon is only visible if the contact has an email address 3: In the chat box, when tapping the paper clip a drawer of icons is shown so that the user can send location, photo, etc. two icons should be shown to "Request Gift" and "Send Gift". The request gift displays an activity so that the user can enter a message and taps "Request". The activity returns the entered string and sends it to the chat conversation. The send gift also does the same. When the other side received a "request gift" in his/her chat conversation, there is a small icon to accept or reject the gift. It is only the beginning of a potentially longer project/relationship ;-)