Add another handler method into JsonServiceExporter with jakarta request and response objects

Newer Spring Framework uses jakarta.servlet.http.HttpServletRequest
and jakarta.servlet.http.HttpServletResponse objects from the jakarta.* namespace.

If JsonRpcServer is registered with @AutoJsonRpcServiceImpl in newer
Spring Framework, then request fail due to missing method in a web handler.

Newer org.springframework.web.HttpRequestHandler has a signature with jakarta objects,
and if JsonServiceExporter has a method with same signature,
then it can work with newer Spring MVC.

Author: cyb3r4nt

src/main/java/com/googlecode/jsonrpc4j/spring/JsonServiceExporter.java

@@ -31,4 +31,15 @@ public void handleRequest(HttpServletRequest request, HttpServletResponse respon
 		response.getOutputStream().flush();
 	}
 
+    /**
+     * {@inheritDoc}
+     */
+    public void handleRequest(
+        jakarta.servlet.http.HttpServletRequest request,
+        jakarta.servlet.http.HttpServletResponse response
+    ) throws ServletException, IOException {
+        jsonRpcServer.handle(request, response);
+        response.getOutputStream().flush();
+    }
+
 }