Improvements to app bundle size reports (#28169)

Summary:
Make the Android app bundle size report more legible, and update existing reports if possible.

## Changelog

[Internal] [Changed] - Update existing app bundle size report if possible
[Internal] [Changed] - Generate table for APK sizes report
Pull Request resolved: https://github.com/facebook/react-native/pull/28169

Test Plan:
- App bundle size reports should be updated when possible
- Android apk sizes should be reported using a table

Reviewed By: cpojer

Differential Revision: D20141490

Pulled By: hramos

fbshipit-source-id: 3fc1b808b27e893c0a3e4e34eafc39094448799c