Initial commit — StreamStack v1

Five-service streaming platform: auth, catalogue, streaming, ingest, thumbnailer.
Includes React frontend served by nginx, NATS JetStream event bus, aiobotocore
async S3, PyAV video metadata + thumbnail extraction, service-to-service JWT auth,
and a full unit + e2e test suite.

.gitignore

@@ -0,0 +1,14 @@
+.env
+.venv/
+__pycache__/
+*.pyc
+*.pyo
+.pytest_cache/
+.coverage
+htmlcov/
+dist/
+*.egg-info/
+.ruff_cache/
+keys/
+*.pem
+testdata/