feat(secrets): support suppressions in JSON files

[MaryArmaly]

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

Description

This PR adds suppression support for SECRETS in JSON files (also works for YAML/YML files) by adding metadata-based suppression
It supports object-rooted and array-rooted JSON/YAML structures

Checklist:

• 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
• I have added tests that prove my feature, policy, or fix is effective and works
• New and existing tests pass locally with my changes