Dphan/update to cpp17

[dorotaphanSiili]

https://github.com/apigear-io/internal-issue-tracker/issues/12

Closes #

📑 Description

✅ Checks

• [ ] My pull request adheres to the code style of this project
• [ ] My code requires changes to the documentation
• [ ] I have updated the documentation as required
• [ ] All the tests have passed

ℹ Additional Information

[dorotaphanSiili]

PR was open to cpp14 template and should be on cpp 17, moved here: https://github.com/apigear-io/template-cpp17/pull/4