Add security rules models and unit tests

[cdot65]

Checklist for This Pull Request

🚨Please adhere to the guidelines for contributing to this repository.

• [x] Ensure you are submitting your pull request to a branch dedicated to a specific topic/feature/bugfix. Avoid using the master branch for pull requests.
• [x] Target your pull request to the main development branch in this repository.
• [x] Ensure your commit messages follow the project's preferred format.
• [x] Check that your code additions do not fail any linting checks or unit tests.

Pull Request Description

Add support for Security Rules

What does this pull request accomplish?

• Feature addition
• Documentation update

Are there any breaking changes included?

• [ ] Yes
• [x] No

Is there anything the reviewers should know?

Thank you for your contributions!

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Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

:white_check_mark: All tests successful. No failed tests found.

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Files with missing lines	Coverage Δ
scm/config/security/__init__.py	100.00% <100.00%> (ø)
scm/config/security/security_rule.py	100.00% <100.00%> (ø)
scm/models/security/__init__.py	100.00% <100.00%> (ø)
scm/models/security/security_rules.py	100.00% <100.00%> (ø)