Use Gcov + LCOV/gcovr to show C/C++ projects code coverage results

Demo Codes for CS253A Course

Unikraft hello world application with coverage support

An example C++ repository built with CMake on Linux using GitHub Actions and analyzed on SonarCloud (test coverage by gcov)

Example to apply CI to C++98 example code with travis, makefiles, and gtest to cover it

Provides a pre-canned C++ project layout along with automation, containerized tools and fill-in-the-blanks documentation.