Nio should integrate with device's address book and allow users to map Matrix users to entries in their contact list

[justMaku]

Currently Nio uses the contact information received from the Matrix server which prevents the user from using custom names and contact images for a given chat. Also, in cases of bridged accounts (i.e Telegram or Signal) appends a "(Telegram)" suffix to the accounts name. This pollutes the contact list with unnecessary information.

One thing to keep in mind when such feature is implemented is how to handle a single address book contact being assigned several Matrix handles (in case of bridged accounts).