Logging example would be useful

I can't find any practical examples of how to apply logging to graph requests. When things don't work as expected it's really handy to be able to see what you are actually sending and receiving from the API.

I've tried the following but it crashes trying to create the client:

        $this->tokenRequestContext = new AuthorizationCodeContext(
            $this->config['tenant_id'],
            $this->config['app_id'],
            $this->config['client_secret_value'],
            'NOT_AUTHENTICATED', // Auth code dummy value
            $this->urlGenerator->generate('ms365_login_callback', [], UrlGeneratorInterface::ABSOLUTE_URL),
        );

        $tokenCache = new UserAccessTokenCache($this->tokenRequestContext); // Custom cache
        // Create the default handler stack
        $handlerStack = GraphClientFactory::getDefaultHandlerStack();

        // Add the log handler
        $handlerStack->push(Middleware::log(
            $this->logger,
            new \GuzzleHttp\MessageFormatter('{req_headers} - {req_body} - {res_headers} - {res_body}')
        ));

        $adapter = new GraphRequestAdapter(
            GraphPhpLeagueAuthenticationProvider::createWithAccessTokenProvider(
                GraphPhpLeagueAccessTokenProvider::createWithCache(
                    $tokenCache,
                    $this->tokenRequestContext,
                    self::AZURE_SCOPES
                )
            ),
            GraphClientFactory::createWithMiddleware($handlerStack)
        );

        $this->graphServiceClient = GraphServiceClient::createWithRequestAdapter($adapter);

Any help with this would be very handy.

Start with the GraphClientFactory handler stack, Middleware::log, and GraphRequestAdapter setup shown in the issue. Verify why the provided client-creation example crashes, then document a practical way to log Graph API request and response details. Done means a newcomer can follow the example successfully and inspect the exchanged data.