add appBuildVersion to build metadata

[dsokal]

Checklist

• I've added an entry to CHANGELOG.md if necessary.

Why

@jonsamp asked to add Android version code and iOS build number to build metadata.

How

• appBuildVersion
  • iOS
    • generic projects: CFBundleVersion in Info.plist
    • managed projects: ios.buildNumber in app config
  • Android
    • generic projects: versionCode in build.gradle
    • managed projects: android.versionCode in app config
• I also changed how version is resolved. Previously, it was always version from the app config. It wasn't correct for generic projects.
  • managed projects: version in app config
  • generic projects:
    • android: versionName in build.gradle
    • ios: CFBundleShortVersionString in Info.plist

Test Plan

• Added some unit tests
• Ran android and ios builds and verified that correct metadata have been sent to www.

[github-actions]

Size Change: +433 B (0%)

Total Size: 31.7 MB

Filename	Size	Change
./packages/eas-cli/dist/eas-linux-x64.tar.gz	31.7 MB	+433 B (0%)

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