[Feature Request]: Use GitHub Actions to publish the extension

[SchoolGuy]

As a user
I would like GitHub Actions to be used to publish the extension to the VS Code Marketplace
so that I have a transparent overview of the current version.

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Microsoft has an official documentation on how to achieve this: https://code.visualstudio.com/api/working-with-extensions/continuous-integration#github-actions

This would prevent issues like #12 and #13.

[bearmini]

That's a good idea. I'll give it a try.