Consent before being added to a group
If you have set a username anyone can add you to any group on Telegram. In addition to having the same setting that's present in the official apps (#271), we could also implement a consent popup that would be shown if you didn't join the group yourself - helpful in cases where you want to be added to some group by someone outside your contacts. If you reject you would be automatically removed from the group.
So there would be three settings instead of two:
- Everyone
- Ask every time
- Contacts
Potential problems:
- if using TELEports on multiple devices we don't have a way of synchronizing the consent status - maybe don't show it if the user already wrote a message in the group, or use a chat filter for that?