Indent size "indent" and "useTabs"

[DoggyXomaX]

Just modified the plugin for myself as the required settings were not found.\ P.S. I'm not an active github user (newbie), but I want to offer a good feature.\ P.P.S. Also, I have not dealt with plugins for VSCode before.

1. I added two parameters "indent" and "useTabs" in package.json at liveSassCompile.settings.formats:

   "default": [
   {
       "format": "expanded",
       "extensionName": ".css",
       "savePath": null,
       "indent": 2,
       "useTabs": false
   }
   ],
   "minItems": 1,
   "items": {
   "type": "object",
   "properties": {
       ...
       "indent": {
           "description": "Set indentation value for spaces.\nNote: this parameter has no effect when the parameter useTabs is set to true.",
           "type": "integer",
           "default": 2
       },
       "useTabs": {
           "description": "Set it as `true` if you want to use tabs instead of spaces.",
           "type": "boolean",
           "default": false
       }
   },
   ...
   }

2. In appModel.js i added function validateIndentSize(indent) under getCssStyle(format)

getCssStyle(format) {
    /* . . . */
}
validateIndentSize(indent) {
    let outputStyleIndent = indent || 2;
    outputStyleIndent = (outputStyleIndent < 1 ? 1 : (outputStyleIndent > 10 ? 10 : outputStyleIndent));
    return outputStyleIndent;
}

3. And also applied the indent to the options in function GenerateAllCssAndMap at formats.forEach(format => { . . . }):

   formats.forEach(format => {
   let options = this.getCssStyle(format.format);
   let cssMapUri = this.generateCssAndMapUri(sassPath, format.savePath, format.extensionName);
   let useTabs = format.useTabs || false;
   if (useTabs) {
       options['indent'] = '\t';
   } else {
       let indentSize = this.validateIndentSize(format.indent);
       options['indent'] = ' '.repeat(indentSize);
   }
   promises.push(this.GenerateCssAndMap(sassPath, cssMapUri.css, cssMapUri.map, options));
   });

I really hope that you will add this feature in the future.