add `html-minimizer-webpack-plugin` to official plugins

[alexander-akait]

Feature to document

https://github.com/webpack-contrib/html-minimizer-webpack-plugin

Author(s)

Any

Additional information

No

[ ] I am willing to work on this issue and submit a pull request.

[snitin315]

I will do this.

[snitin315]

I think now we don't need to do this manually after #4013

Only excluded plugins are -

webpack.js.org/src/utilities/constants.js

Lines 18 to 25 in 46d0ed3

	const excludedPlugins = [
	'webpack-contrib/component-webpack-plugin',
	'webpack-contrib/extract-text-webpack-plugin',
	'webpack-contrib/i18n-webpack-plugin',
	'webpack-contrib/babel-minify-webpack-plugin',
	'webpack-contrib/uglifyjs-webpack-plugin',
	'webpack-contrib/zopfli-webpack-plugin'
	];

/cc @EugeneHlushko

[chenxsan]

Indeed, it's already included here https://webpack.js.org/plugins/html-minimizer-webpack-plugin/ automatically after #4013