NotesApi: fix createMergeRequestNote() API breakage introduced in 5.8.0 (#1305)

Author: peat-psuwit

src/main/java/org/gitlab4j/api/NotesApi.java

@@ -524,6 +524,22 @@ public Note createMergeRequestNote(
         return (response.readEntity(Note.class));
     }
 
+    /**
+     * Create a merge request's note.
+     *
+     * <pre><code>GitLab Endpoint: POST /projects/:id/merge_requests/:merge_request_iid/notes/:note_id</code></pre>
+     *
+     * @param projectIdOrPath the project in the form of an Long(ID), String(path), or Project instance
+     * @param mergeRequestIid  the merge request IID to create the notes for
+     * @param body the content of note
+     * @return the created Note instance
+     * @throws GitLabApiException if any exception occurs
+     */
+    public Note createMergeRequestNote(Object projectIdOrPath, Long mergeRequestIid, String body)
+            throws GitLabApiException {
+        return createMergeRequestNote(projectIdOrPath, mergeRequestIid, body, null, false);
+    }
+
     /**
      * Update the specified merge request's note.
      *