update project template
- file GLOB with symlinks for settings file
- project-template: update Doxyfile for doxygen version of Ubuntu 20.04
- Consolidate coverage options
- Ignore eclipse python project file.
- project-template: update clang-format (ReflowComments)
- project-template: update clang-format configuration
- [project-template] add coding style checker
- Ignore files generated by CMake during configure
- project-template: add comment to clang-format