feature req: support Android 9

[nutpantz]

I would love it if this app could support Android 9.
Which is the newest phone i have that the ex girlfriends and banks have the number.

Thank you

[aj3423]

Unfortunately, the CallScreeningService only seems to work on Android 10+:

https://developer.android.com/about/versions/10/features#call-screening

Android 10 provides your app with a means to identify calls not in the user's address book as potential spam calls, and to have spam calls silently rejected on behalf of the user

and https://developer.android.com/develop/connectivity/telecom/dialer-app/screen-calls:

Devices that run Android 10 (API level 29) or higher allow your app to identify calls from numbers that aren't in the user's address book as potential spam calls.

For Android 9, it has to be the default call app to filter calls, so I think it's not possible to adapt Android 9 :(