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Added necessary functions with call_guard policy py::gil_scoped_release to avoid blocking python threads

Added minimum functions with call_guard policy py::gil_scoped_release to avoid blocking python threads

 - README with list of dependencies
 - Compilation using CMake
 - cameo c++ API downloaded from source if not installed on the machine
 - doxygen for documentation
 - python binding with pybind11
 ** Installation of the python binding not yet fixed **