feat: add policy evaluation example

[gebhardtr]

Description

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Fixes # (issue)

Type of change

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• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

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• Test A
• Test B

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Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[shopewf]

Trying to understand how the .rego files in this policies folder get consumed by the OPA podman instance. Is this policies folder just a standard naming convention for OPA that it knows to consume all the .rego files inside of it?

[gebhardtr]

yep, they're:

• bundled into a tar.gz via make
• exposed to the OPA server via nginx