chore(docs): Update docs

ARCHITECTURE.md

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+# Architecture
+
+This document aims to answer the question *Where is the code that does X?*
+
+## Project Layout
+
+The directory structure is broken down as follows:
+
+- `cmd/` - These CLI tools are primarily used during development for end-to-end testing without needing to pull the library into trivy/tfsec etc.
+- `rules` - All of the rules and policies are defined in this directory.
+- `pkg/spec` - Logic to handle standardized specs such as CIS.
+- `pkg/rules` - This package exposes internal rules, and imports them accordingly (see _rules.go_).
+- `test` - Integration tests and other high-level tests that require a full build of the project.
+- `scripts` - Usefule generation scripts for bundle generation and verification purposes.