feat: add numberOfLines props to Snackbar

[whoami-shubham]

Right now I couldn't find any props for trimming the snack bar text, I can trim the text before giving it to the snack bar however that wouldn't be very responsive. if the text is very long the snack bar looks like following

if I provide numberOfLines = 2 at here it looks like following

let me know is it a good idea to work on it.

1. react-native : 0.63.3
2. react-native-paper: 4.2.0
3. react-native-vector-icons:6.6.0

[raajnadar]

Yes this looks ok to me.

[whoami-shubham]

should I send a PR for it ?

[raajnadar]

Yes, And let the internal team decide if that is ok