Add catppuccin/vscode

[Robson]

Thank you for the suggestion.

• [ ] Needs a project description. It would be good to tell the reader what the project is, how this theme is different to other themes, any aims of the project, what version of VSCode is required, how to pronounce the project name, etc. Anything that is relevant.
• [ ] Need to fix the spelling of "extentions".

Side-note: might be worth looking into the red Ruby icon, because I wouldn't consider that to be a pastel colour. If I make a Ruby file in my standard copy of VSCode the red is more pastel than this.

[Robson]

There's been no response, so I'm closing this. Feel free to re-submit if the issues are resolved.