Add support for JavaScript comments.

[traceyyoshima]

Comments are currently returned as raw text, which eliminates tags.

    @Test
    void javaScriptDoc() {
        rewriteRun(
          javascript(
            """
              /**
               * @type {string}
               */
              var s ;

              /**
               * @param {string} p1
               * @param {string} p2
               */
              function f ( p1, p2 ) {
              }
              """
          )
        );
    }