add missing method
add missing method

to solve the error
```Fatal error: Class Application contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (Psr\Http\Server\RequestHandlerInterface::handle)```
ndm2/cakephp,ADmad/cakephp,ADmad/cakephp,ndm2/cakephp,ADmad/cakephp,ndm2/cakephp,ADmad/cakephp,ndm2/cakephp,CakeDC/cakephp,CakeDC/cakephp,CakeDC/cakephp,cakephp/cakephp,cakephp/cakephp,cakephp/cakephp,CakeDC/cakephp,cakephp/cakephp