added new features:

• bump version to 0.2.0
• updated README.md
• added and updated several tests
• added and updated doc
• updated sample_extractor and added sample_executor
• added clang-format specification
• added support for sanitizers
• added more exhaustive gitlab-pipeline
• added more specific exceptions
• updated help-message generation in parsers (sub_parser, main_parser and basic_parser)
• minor improvements of CMakeLists.txt (e.g. added cppcheck)
• renamed full_example to large_example
• minor improvements to examples
• added test examples scripts
• added build_info_string
• unified arguments and options