Adding github action to validate contextual survey json

[eliasyishak]

Reference issue:

• ☂️ Create a survey handler class to enable package to share surveys dart-lang/tools#81

This will add validation for the json file to ensure the data is correct

Pre-launch Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• I read the Tree Hygiene wiki page, which explains my responsibilities.
• I read the Flutter Style Guide recently, and have followed its advice.
• I signed the CLA.
• I listed at least one issue that this PR fixes in the description above.
• I updated/added relevant documentation (doc comments with ///).
• I added new tests to check the change I am making, or this PR is test-exempt.
• All existing and new tests are passing.

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[eliasyishak]

@jayoung-lee whenever you get a chance to review, this PR will essentially ensure that future updates to the context survey json will be valid and won't break package:unified_analytics

[parlough]

Great idea to add this!

A few minor drive-by comments to help with future readability/maintainability. I didn't cover too much as I know this is more of a one-off verification script.

Consider also adding a simple analysis workflow to help stay on top of future deprecations or warnings.

[parlough]

I love the extra cleanup after you ran analysis!

Three more minor suggestions to be consistent with the rest of your code:

[parlough]

As for the analysis question:

I would probably add it as a separate job in the same file, so it doesn't ever block the actual validation. Would something like this work?

  analyze:
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: surveys/validator
    steps:
      - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
      - uses: dart-lang/setup-dart@d6a63dab3335f427404425de0fbfed4686d93c4f
      - name: Verify formatting
        run: dart format --output=none --set-exit-if-changed .
      - name: Analyze Dart files
        run: dart analyze --fatal-infos

[parlough]

I accidentally deleted your comment. I'm so sorry...I meant to delete one of mine. 🙇

Thanks for addressing my comments, I appreciate it!

[eliasyishak]

As for the analysis question:

I would probably add it as a separate job in the same file, so it doesn't ever block the actual validation. Would something like this work?

  analyze:
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: surveys/validator
    steps:
      - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
      - uses: dart-lang/setup-dart@d6a63dab3335f427404425de0fbfed4686d93c4f
      - name: Verify formatting
        run: dart format --output=none --set-exit-if-changed .
      - name: Analyze Dart files
        run: dart analyze --fatal-infos

Yep! This seems to work as expected, and looks like both jobs ran in my latest commit

[parlough]

Looks great, thanks for making those adjustments!

It'll be nice to have this verification.