chore: Update CODEOWNERS to implement hierarchical authority (#15)

* Update CODEOWNERS with hierarchical authority and Governance inclusion

Author: nearlyforget

.github/CODEOWNERS

@@ -1,5 +1,15 @@
 # Universal Commerce Protocol (UCP) Codeowners
-*  @Universal-Commerce-Protocol/devops-maintainers
+
+# Default for all files.
+*  @Universal-Commerce-Protocol/devops-maintainers @Universal-Commerce-Protocol/maintainers @Universal-Commerce-Protocol/tech-council @Universal-Commerce-Protocol/governance-council
+
+# Infrastructure, Tooling & Configuration
+/.github/                 @Universal-Commerce-Protocol/devops-maintainers @Universal-Commerce-Protocol/maintainers @Universal-Commerce-Protocol/tech-council @Universal-Commerce-Protocol/governance-council
+/.gitignore               @Universal-Commerce-Protocol/devops-maintainers @Universal-Commerce-Protocol/maintainers @Universal-Commerce-Protocol/tech-council @Universal-Commerce-Protocol/governance-council
+/.pre-commit-config.yaml  @Universal-Commerce-Protocol/devops-maintainers @Universal-Commerce-Protocol/maintainers @Universal-Commerce-Protocol/tech-council @Universal-Commerce-Protocol/governance-council
+/pyproject.toml           @Universal-Commerce-Protocol/devops-maintainers @Universal-Commerce-Protocol/maintainers @Universal-Commerce-Protocol/tech-council @Universal-Commerce-Protocol/governance-council
+/uv.lock                  @Universal-Commerce-Protocol/devops-maintainers @Universal-Commerce-Protocol/maintainers @Universal-Commerce-Protocol/tech-council @Universal-Commerce-Protocol/governance-council
 
 # Governance
+/LICENSE                 @Universal-Commerce-Protocol/governance-council
 /.github/CODEOWNERS      @Universal-Commerce-Protocol/governance-council