Initial project setup: NF Hotel Data Analysis API

- Add project structure with domain-driven design organization
- Implement FastAPI endpoints for hotel booking reports
- Add data cleaning, statistics, and LLM report generation services
- Include configuration management and security utilities
- Add repository layer for bookings and metadata access
- Setup testing framework with conftest.py
- Include example files and documentation

src/nf_hotel_api/main.py

@@ -0,0 +1,28 @@
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+
+from nf_hotel_api.api.v1.router import api_router
+from nf_hotel_api.core.config import get_settings
+
+settings = get_settings()
+
+app = FastAPI(
+    title="NF Hotel Analytics API",
+    description="Secure API for descriptive statistics and LLM-generated reports over NF Hotel bookings.",
+    version="0.1.0",
+)
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=settings.allowed_origins,
+    allow_credentials=True,
+    allow_methods=["GET", "POST"],
+    allow_headers=["X-API-Key", "Content-Type"],
+)
+
+app.include_router(api_router)
+
+
+@app.get("/health", tags=["health"])
+def health_check() -> dict[str, str]:
+    return {"status": "ok"}