Feature/get graph data from gap

mapping_provider/__init__.py

-"""Initializes the FastAPI application."""
+"""Create a FastAPI application for the mapping provider."""
 
 from fastapi import FastAPI
 
 from mapping_provider.api.common import router as version_router
-
+from mapping_provider.api.network_graph import router as graph_router
 
 def create_app() -> FastAPI:
     """Create a FastAPI application."""
@@ -11,5 +11,12 @@ def create_app() -> FastAPI:
         title="Mapping provider",
         description="Mapping provider endpoints for GÉANT maps",
     )
+
+    # Force configuration to be loaded at startup to avoid issues with missing config
+    from mapping_provider.dependencies import load_config
+    _ = load_config()
+
     app.include_router(version_router)
-    return app
+    app.include_router(graph_router)
+
+    return app
\ No newline at end of file