Hi,
SonarLint isn’t extensible. It has a hardcoded list of official language plugins and this limitation is also mentioned on SonarLint FAQ:
Third party analyzers are not executed in SonarLint
Some issues may be reported in SonarQube by a plugin leveraging a third party analyzer (PMD, Checkstyle, ESLint, PyLint, …). SonarLint will only run rules from SonarSource analyzers including custom rules extending SonarSource analyzers . Third party analyzers usually have their own IDE integration, so we have no plan to run them in SonarLint.