[TASK] refactor Controller using ResponseFactory as DI injected

[calien666]

From #35 mentioned by @sbuerk:

I would suggest to let the ResponseFactory and the StreamFactory be injected in the constructor and use the factories for creating the response by adding a helper method createResponse()

protected ResponseFactoryInterface $responseFactory;
protected StreamFactoryInterface $streamFactory;

public function __construct(
  // ...
  ResponseFactoryInterface $responseFactory,
  StreamFactoryInterface $streamFactory, 
  // ...
) {
  $this->responseFactory = $responseFactory;
  $this->streamFactory = $streamFactory;
}

protected function createResponse(string $content, int $status = 200, string $reasonPhrase = '', string contentType = 'text/html; charset=utf-8'): ResponseInterface
{
  return $this->responseFactory->createResponse()
    ->withHeader('Content-Type', $contentType)
    ->withStatus($status, $reasonPhrase)
    ->withBody($this->streamFactory->createStream($content));
}

and than replace this HtmlRespone with:

return $this->createResponse(
  'Action not allowed',
  400,
  'Action not allowed',  
);

and similar for the other HtmlResponse's

Originally posted by @sbuerk in #35 (comment)