[IMPROVE] Use Android 12 SplashScreen API

[diegolmello]

Proposed changes

Updates https://github.com/zoontek/react-native-bootsplash and adds support to Android 12 SplashScreen API.

Issue(s)

How to test or reproduce

• We need to test it on 4 versions and on share extensions
  • Android Experimental
  • Android Official
  • iOS Experimental
  • iOS Official
• Tested on
  • Samsung Galaxy s10e Android 12
  • Samsung Galaxy s21 Android 11
  • Samsung Galaxy s20 Android 10
  • Pixel 3a Android 9
  • Google Nexus 7 Android 6
  • iPhone 13 Pro Max
  • iPad (9th gen)

Screenshots

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• Improvement (non-breaking change which improves a current function)
• New feature (non-breaking change which adds functionality)
• Documentation update (if none of the other choices apply)

Checklist

• I have read the CONTRIBUTING doc
• I have signed the CLA
• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works (if applicable)
• I have added necessary documentation (if applicable)
• Any dependent changes have been merged and published in downstream modules

Further comments

NATIVE-111