Apply a code-style check as a part of the automated build

[garretfick]

Problem

There are several developers who are contributing code to this project. We each have our own preferences for how things are structured, but that's bad. We should have a common style to make the code easier to read, to eliminate potential bugs, and improve overall quality.

Solution

Improve the CI build scripts to include automated code quality checks using domain-specific style checkers. For the C++ code, this would be cppcheck as a start.

[pedromorgan]

This will work also as were using doxygen to create api docs so they should marry also

[garretfick]

https://sonarcloud.io/ might be a good choice. I've experimented with a codacy, but I get web service problems regularly.