[Cpp][Qt][client] Fixed issue with unique items in OpenAPI schema

Created by: Thaulino

Details of change

object.mustache Added equal operator Added qhash Operator

This way, the schema can be stored in a QSet in api template depending on unique items output.insert(val) -- QSet (unique items) or ouput.append(val) -- QList (not unique items)

Test done

• does the latest openapi-generator generate valid code ? I used the same openapi as attached to this issue #11951 (closed) java -jar openapi-generator-cli-5.4.0.jar generate -t cpp-qt-templates -i unique_petstore.json -g cpp-qt-client -o unique_petstore Build the library with cmake

related issues

resolves #11621 (closed) resolves #11951 (closed)

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technical committee

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