[Tooling] Authz exploration

[bryanchriswhite]

Objective

Explore and document authz use cases to better understand and prepare for its potential applicability in the Shannon --> Morse migration.

Origin Document

Goals

• Enable further exploration of utility/applicability of authz during Morse --> Shannon migration
• Improve internal exposure/discoverability of authz mechanics (high level)

Deliverables

• A PR which adds:
  • Tests which exercise
  • Docs explaining how to use them and how authz works (at a high level).

Non-goals / Non-deliverables

• Refactoring existing authz tooling (e.g. param update targets, JSON, etc.)
• Documenting how we currently use authz

General deliverables

• Comments: Add/update TODOs and comments alongside the source code so it is easier to follow.
• Testing: Add new tests (unit and/or E2E) to the test suite.
• Makefile: Add new targets to the Makefile to make the new functionality easier to use.
• Documentation: Update architectural or development READMEs; use mermaid diagrams where appropriate.

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Creator: @bryanchriswhite
Co-Owners: @Olshansk