Analyse usages in composer scripts

[yguedidi]

For the package incenteev/composer-parameter-handler, it only provide classes to be used in composer script like:

    "scripts": {
        "post-install-cmd": [
            "Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",
        ],
        "post-update-cmd": [
            "Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",
        ],
    }

would be awesome to analyse class usages in composer scripts, to avoid just ignoring the package.

[janedbal]

I think you can easily use the same approach as described in readme for this.