[CPP-QT-QHTTPENGINE] Code errors generating server with petstore

Created by: ipittau

Description

Server has some code errors that prevents build and to runtime good execution.

1. Error on API Request handler lambda function for process, extra "m" is present
2. Error on regular expression to capture ids on path

openapi-generator version

Generator version 5.3.1

OpenAPI declaration file content or url

Sample Petstore

Command line used for generation

docker run --rm -v "${PWD}:/local" openapitools/openapi-generator-cli generate -i /local/petstore.yaml -g cpp-qt-qhttpengine-server -o /local/out/qt

Steps to reproduce

Generate the server and try to build.

1. A build error is present because of undeclared m parameter
2. Runtime a simple get will not be capture from regular expression (GET /v2/user/MyUser)

Suggest a fix/enhancement

1. Fix on modules/openapi-generator/src/main/resources/cpp-qt-qhttpengine-server/apirouter.h.mustache line 39 [this, socket, m] -> [this, socket]

2. Fix on modules/openapi-generator/src/main/resources/cpp-qt-qhttpengine-server/apirouter.h.mustache line 94 QRegularExpression parExpr( R"({([^\/\\s]+)})" ); -> QRegularExpression parExpr( R"({([^\/\s]+)})" ); ->