Add versioned HTTP gateway routing by business domain

src/adcloud_server/api/v1/ads.py

@@ -0,0 +1,11 @@
+from fastapi import APIRouter
+
+from adcloud_server.schemas import ModuleHealthResponse
+
+router = APIRouter()
+
+
+@router.get("/health", response_model=ModuleHealthResponse)
+def health() -> ModuleHealthResponse:
+    """Verify routing to the ads module; not a dependency readiness check."""
+    return ModuleHealthResponse(module="ads")