Adding a new language (like Java, Javascript etc) in Sonarqube server

I have 4 XML files(rule set) for languages Java, CSS, XML and WEB (one XML per language) I was able to import the rules(XML file) for Java language but I dont see other three languages on Sonarqube server. How can I create a new language tab and import their rules? Is there a plugin I can use?

Thanks!