Update global config

[rgmz]

Description:

This PR updates the config generation logic to populate the global config programmatically.

The advantages of this are two-fold:

1. We can generate tests for the global config, e.g. making sure that a pattern is working as expected (not done atm)
2. The rule validate tests now inherit global allowlist values. This allows us to safely add common offenders, e.g. {{ .Secrets.FOO }} to the global allowlist.

It also organizes the existing [allowlist.paths] entries, and adds a few new ones.

Checklist:

• Does your PR pass tests?
• Have you written new tests for your changes?
• Have you lint your code locally prior to submission?

[zricethezav]

I like it