feat(deps): add pyproject.toml, uv.lock, and ansible/requirements.yml

Declares ansible>=10 as the only pip dependency for the control node.
Generates uv.lock pinning ansible 12.3.0 / ansible-core 2.19.7 and
the full transitive tree (13 packages). Adds explicit empty
ansible/requirements.yml confirming no Galaxy collections are used.

Closes RAIL-BS-WP-0001 T01–T04. Enables SBOM ingestion.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

ansible/requirements.yml

@@ -0,0 +1,5 @@
+---
+# No external Ansible Galaxy roles or collections required.
+# Add roles/collections here as needed:
+# roles: []
+# collections: []