1. Support numbers blacklist and whitelist
- blacklist is for blocking.
- whitelist is for important calls.
2. Support blocking mode
- Accept all incoming calls
- Blocking all incoming calls
- Blocking incoming calls from blacklist
- Blocking all incoming calls except whitelist
- Block all incoming calls except whitelist and contacts
3. Support how to block calls
- Hang up
- Mute without hanging up
4. Support show notification after blocked calls
- It can be disabled in the settings