Update ColorToStringConverter.shared.cs

[cl2raul66]

Add ColorToHexArgbStringConverter

This PR adds a new converter, ColorToHexArgbStringConverter, which allows you to convert between Color objects and hex strings in ARGB format.

[cl2raul66]

@dotnet-policy-service agree

[brminnick]

Thanks! Before we can merge this, we need two more things:

• Add Unit Tests
• Write Documentation:
  • Please submit a PR to the Docs repo: https://github.com/MicrosoftDocs/CommunityToolkit/tree/main/docs/maui/converters
  • You can leverage the existing ColorToHexRgbaStringConverter docs to write your documentation: https://github.com/MicrosoftDocs/CommunityToolkit/blob/main/docs/maui/converters/color-to-hex-rgba-string-converter.md

[cl2raul66]

• Add Unit Tests

I don't know how to do that step

[Jake-Derrick]

@cl2raul66, I created a PR to add unit tests to this branch. Let me know what you think!

[brminnick]

Thanks @Jake-Derrick!

@cl2raul66 - could you please merge it? I believe you're the only one who has the capability to accept + merge his PR.

[brminnick]

Thanks! I approve this PR.

Once you've opened a PR on our Docs Repo providing documentation of the new feature, we can merge this.

• Write Documentation:
  • Please submit a PR to the Docs repo: https://github.com/MicrosoftDocs/CommunityToolkit/tree/main/docs/maui/converters
• You can leverage the existing ColorToHexRgbaStringConverter docs to write your documentation: https://github.com/MicrosoftDocs/CommunityToolkit/blob/main/docs/maui/converters/color-to-hex-rgba-string-converter.md

[bijington]

Docs PR is in, sorry we missed this: MicrosoftDocs/CommunityToolkit#451