Updated Documentation

[yousefsawy]

Pull Request

Description

Moved the API endpoints documentation & Models documentation from the README to new files: DocApiEndpointsList.md & DocModelsList.md

Checklist:

• [x] My code follows OCF's coding style guidelines
• [x] I have performed a self-review of my own code
• [x] I have made corresponding changes to the documentation
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] I have checked my code and corrected any misspellings

[peterdudfield]

Thanks @yousefsawy for this

[peterdudfield]

@all-contributors please add @yousefsawy for doc

[allcontributors[bot]]

@peterdudfield

I've put up a pull request to add @yousefsawy! :tada: