Handle query string in assetName

[jimvandervoort]

Noticed this plugin does not handle hashes in sourcemaps correctly. The .map param is added after the query string instead of to the file name. Example:

new MiniCssExtractPlugin({
  filename: '[name].css?[contenthash]',
}),

results in a file name of example.css?query -> example.css?query.map. This should be: example.css?query -> example.css.map?query.

[NMFR]

thx for the help