Refactoring code for modular approach

app/api/main.py

@@ -0,0 +1,13 @@
+from fastapi import APIRouter
+from app.api.v1 import auth, products, stock, shops, marketplace, admin, stats
+
+api_router = APIRouter()
+
+# Include all route modules
+api_router.include_router(auth.router, prefix="/auth", tags=["authentication"])
+api_router.include_router(products.router, prefix="/products", tags=["products"])
+api_router.include_router(stock.router, prefix="/stock", tags=["stock"])
+api_router.include_router(shops.router, prefix="/shops", tags=["shops"])
+api_router.include_router(marketplace.router, prefix="/marketplace", tags=["marketplace"])
+api_router.include_router(admin.router, prefix="/admin", tags=["admin"])
+api_router.include_router(stats.router, prefix="/stats", tags=["statistics"])