title: How to get project path in Sonarqube Javascript Extension
body: <p>I am writing a custom rules plugin for the SonarQube Javascript Plugin.
  Now I want to disable my check in specific directories by the rule. (It should not be checked in the bin path for example)</p>
  
  <p>Now my question: how can I get the path of the file that is checked relative to the project path. Or another Solution would be: How to get the project path?</p>
  
  <p>My code is:</p>
  
  <pre><code>@Override
  public void visitNode(Tree tree) {
      CallExpressionTree callExpression = (CallExpressionTree) tree;
  
      if (callExpression.callee().is(Kind.DOT_MEMBER_EXPRESSION)) {
          DotMemberExpressionTree callee = (DotMemberExpressionTree) callExpression.callee();
  
          // get the file that is checked
          File toTestedFile = getContext().getFile();
  
          //how to get the project path here to get the relative path???
  
          if (isCalleeConsoleLogging(callee)) {
              addLineIssue(tree, MESSAGE);
          }
      }
  
  }
  </code></pre>