Initial commit: Vultr API v2 Python wrapper with FastAPI server

- vultr_api/: Python library wrapping Vultr API v2
  - 17 resource modules (instances, dns, firewall, vpc, etc.)
  - Pagination support, error handling

- server/: FastAPI REST server
  - All API endpoints exposed via HTTP
  - X-API-Key header authentication
  - Swagger docs at /docs

- Podman quadlet config for systemd deployment

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

server/Dockerfile

@@ -0,0 +1,18 @@
+FROM python:3.12-slim
+
+WORKDIR /app
+
+# Install dependencies
+RUN pip install --no-cache-dir fastapi uvicorn requests pydantic
+
+# Copy vultr_api library
+COPY vultr_api/ /app/vultr_api/
+
+# Copy server code
+COPY server/ /app/
+
+# Expose port
+EXPOSE 8000
+
+# Run server
+CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000"]