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>

vultr_api/resources/base.py

@@ -0,0 +1,15 @@
+"""
+Base Resource class
+"""
+
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from ..client import VultrClient
+
+
+class BaseResource:
+    """Base class for API resources"""
+
+    def __init__(self, client: "VultrClient"):
+        self.client = client