Add data and consider standard from security-patches-dataset and also process this convention

I found this through @copernico fork.

@sofiaoreis :heart: maintains:
- a website https://security-commits.org/
- a data set of fix patches https://github.com/security-commits/security-patches-dataset
- tools at https://github.com/security-commits/secomlint
- a mini spec/convention to document fixes "SECOM" in commit messages https://github.com/security-commits/secom