Adding Sheet from Beyond

[alvarocavalcanti]

This PR clones #64.

Make sure that your submission has the following:

• A link to the raw github markdown file with a YAML front matter definition containing:
  • The title of your extension
  • A description of your extension
  • The author
  • A hero image
  • An icon
  • Tags (these will help with your extension's discoverability)
  • A link to your extensions manifest

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• You have done your changes in a separate branch.

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• Your pull request puts your extensions details as the last entry in the extensions.json file

[alvarocavalcanti]

@nthouliss This is the new PR

[Several-Record7234]

Validation script and image URLs check out fine. Extension functionality and API usage not checked.