use up-to date react-native-bootsplash instead of react-native-splash-screen package, recommended by firebase to let messaging work properly.

[aliseyalvi]

[aliseyalvi]

@noumantahir react-native-bootsplash current version is v4 which supports react native 0.65+ and our react native version is less than that. So we would have to use react-native-bootsplash v3 to work on our project but the problem is v3 is not maintained and is very old. I dont think it would be a wise decision to replace existing working package with an obselete package as we are already trying to upgrade our packages to latest versions

[noumantahir]

@aliseyalvi alright, we can postpone this, not a priority task anyways