invitation reflinks meta

[zeroone2numeral2]

Todos:

• [ ] command to get the message with an inline button prompting the user to select another users with switch_inline_query_chosen_chat (also allow group chats?)
• [ ] inline mode should be supported. prompt the user to send their invitation link
• [ ] command to ban invitations from an user (if their link is used, warn the user that the invite link they used is not valid)
• [ ] /ban should also ban invitations from that user
• [ ] the log chat message should show a special field with the inviter

[zeroone2numeral2]

Maybe we can make it work in a way that an user's invite link can be used just once, and then it should be generated again (wouldn't allow usage in group chats)