Support all the file types supported by Lizard

[brobeson]

The initial implementation of the extension only supports C++, but Lizard supports more languages. The extension needs to work for those, too. Known changes to the extension are:

• package.json

  "activationEvents": [
    "onLanguage:cpp"
  ],

• src/lizard.ts

  if (!['cpp'].includes(file.languageId) || file.uri.scheme !== 'file') {
    return [];
  }

[JaneX8]

Yes please, I would like to use it for Golang, PHP, Typescript, Javascript and Python. I believe all are supported.

The main reason I want to use this more during development is to make code more efficient, therefore reduce computational power needed, reduce electricity usage and therefore reduce CO2.