Add action for publishing package to WinGet

[mdanish-kh]

This PR proposes to add a GitHub action for submitting the latest stable / beta release to WinGet as it gets published. microsoft/winget-create is used as the tool for submitting the latest package.

Steps needed from maintainers

If the maintainers approve of these changes, they will need to do the following before merging this PR:

1. Fork microsoft/winget-pkgs under a personal or bot account.
2. Create a public access token (classic) with public_repo scope from the user account where the fork exists.
3. Store the created token in a repository secret here with the name WINGET_GITHUB_TOKEN

Once the fork is created, I'll update the fork name in the "Sync winget-pkgs fork" step

For reference, maintainers may see similar implemented actions in the following repos:
Terminal, DevHome, PowerToys, Oh-my-posh

[waldekmastykarz]

Thank you for the suggestion! Let us check it out and we'll get back to you asap

[garrytrinder]

Thanks for the PR @mdanish-kh

This all looks good to me and greatly simplifies the way in which we publish new versions of Dev Proxy to winget, thank you!

I'm happy to use the fork under my account for this which can be found at https://github.com/garrytrinder/winget-pkgs/, I've also created the WINGET_GITHUB_TOKEN secret in this repo.

[mdanish-kh]

Thank you @garrytrinder. I updated the fork name in the action, so the PR should be ready to go from my end 🙂

[garrytrinder]

Thank you @mdanish-kh ❤️