Add missing languages

[dingo-d]

I think these languages should be added

• Go
• Rust
• Ruby
• C#
• Flutter
• Cordova
• Java
• React
• Swift
• TypeScript
• SCSS
• Bash

I'll see if I can find the time to add those sometime in the future, but if anybody wants to add PRs it would be cool to track the languages in one issue.

[brendt]

Thanks for pitching in!