Implement Android App Bundle support

[bagipro]

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Description

@skylot
Please provide instructions again on how to format code before committing :)

Currently implemented support for XML files, also have to finish resource tables

[skylot]

Please provide instructions again on how to format code before committing :)

Check code formatting guide. In short, you just need to run

gradle spotlessApply 

Anyway, I already applied these formatting fixes 😃

[skylot]

@bagipro I reviewed the changes and everything is good.
And here is a small list for future improvements:

• detect proto xml by file content (starting bytes or similar)
• support other .pb resources:
  • resources.pb
  • assets.pb
  • BundleConfig.pb
  • dependencies.pb - can help to restore dependencies for gradle export 😄

[bagipro]

@skylot
May you please check the PR and merge it? I need to update my tool and then research what to do with other .pb files

[skylot]

Thanks @bagipro! PR merged.