🚚 Refactor and simplify backend file structure (#609)

src/backend/app/main.py

@@ -0,0 +1,29 @@
+from fastapi import FastAPI
+from fastapi.routing import APIRoute
+from starlette.middleware.cors import CORSMiddleware
+
+from app.api.api_v1.api import api_router
+from app.core.config import settings
+
+
+def custom_generate_unique_id(route: APIRoute):
+    return f"{route.tags[0]}-{route.name}"
+
+
+app = FastAPI(
+    title=settings.PROJECT_NAME,
+    openapi_url=f"{settings.API_V1_STR}/openapi.json",
+    generate_unique_id_function=custom_generate_unique_id,
+)
+
+# Set all CORS enabled origins
+if settings.BACKEND_CORS_ORIGINS:
+    app.add_middleware(
+        CORSMiddleware,
+        allow_origins=[str(origin) for origin in settings.BACKEND_CORS_ORIGINS],
+        allow_credentials=True,
+        allow_methods=["*"],
+        allow_headers=["*"],
+    )
+
+app.include_router(api_router, prefix=settings.API_V1_STR)