feat(winget): Add support for winget package manager

[Letsch22]

Description

Adds a release step for publishing Starship to the winget package manager for Windows

Motivation and Context

Thought I would kick this off now that #4031 is complete. Still requires an initial wingetcreate new once #4029 releases so that the wingetcreate tool can download and analyze the MSI installers and generate a manifest that this pipeline step can update thereafter. After that, testing this pipeline step will become possible.

Closes #1295

Screenshots (if appropriate):

How Has This Been Tested?

• I have tested using MacOS
• I have tested using Linux
• I have tested using Windows

Checklist:

• I have updated the documentation accordingly.
• I have updated the tests accordingly.

[davidkna]

Still requires an initial wingetcreate new once #4029 releases so that the wingetcreate tool can download and analyze the MSI installers and generate a manifest that this pipeline step can update thereafter.

Does this go into the main starship repo, or does this just need to be added to the winget-pkgs repo?

[Letsch22]

Does this go into the main starship repo, or does this just need to be added to the winget-pkgs repo?

@davidkna I think the generated manifest could optionally be checked in to the starship repo but as you said the main thing is to have it added to https://github.com/microsoft/winget-pkgs. The wingetcreate new command will automatically create a PR against that repo to add the manifest if you provide a GH personal access token with the -t argument.

[davidkna]

Please also add winget to the installation method list.

[Letsch22]

@davidkna Added installation documentation in my latest commit

[davidkna]

Please keep this line, I'd still like to mention that starship can be installed without any extra tools.

[Letsch22]

I added back these lines in my latest commit

[davidkna]

Thanks for the contribution @Letsch22.