feat: recommended file notice

[KClough]

Summary:

Related #877

Adds a new annotation for recommended files and applies this annotation to feed_info.txt and shapes.txt

Expected behavior:

A new validator warning is generated when either feed_info.txt is missing

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• Run the unit tests with gradle test to make sure you didn't break anything
• Format the title like "feat: [new feature short description]". Title must follow the Conventional Commit Specification(https://www.conventionalcommits.org/en/v1.0.0/).
• Linked all relevant issues
• Include screenshot(s) showing how this pull request works and fixes the issue(s)

@isabelle-dr per your request, this pull request contains just the notice.

[CLAassistant]

All committers have signed the CLA.

[isabelle-dr]

@KClough could you remove the mention of shapes.txt in the description of this PR and update the image, since we decided to only apply this notice to feed_info.txt?
This is so that when we go back to this PR in the future, it is clear what it is doing. :)

[KClough]

@KClough could you remove the mention of shapes.txt in the description of this PR and update the image, since we decided to only apply this notice to feed_info.txt? This is so that when we go back to this PR in the future, it is clear what it is doing. :)

Updated!
Thanks for catching that!
I got confused from shapes.txt mentioned in the original issue.

[maximearmstrong]

One small comment aside, we are ready to merge this PR. Thank you @KClough!

[maximearmstrong]

You can add your organization to the copyright if you'd like and also update the year.

[maximearmstrong]

If you change it, you can add [acceptance test skip] at the end of your commit message so the acceptance tests don't run once again.

[maximearmstrong]

Actually, if possible, the modifications applied to RULES.md here would be in this PR.

[KClough]

Actually, if possible, the modifications applied to RULES.md here would be in this PR.

I didn't add the update to the Rules file in this PR because the Rule isn't actually applied to any datasets yet. Please confirm if you still think it makes sense to be in this PR.

[maximearmstrong]

I didn't add the update to the Rules file in this PR because the Rule isn't actually applied to any datasets yet. Please confirm if you still think it makes sense to be in this PR.

I think it's ok because it is partially mostly related to feed_infos.txt. In the future, let's say that it would better to add it in the PR where the notice itself is created.

As per the copyright, I believe it should be * Copyright 2020 Google LLC, Jarvus Innovations LLC as the code was partially took from the required annotation file. Sorry about the confusion!

[maximearmstrong]

Thank you @KClough!