[add]: refactor/clean up

app/salary_analytics/middlewares/middleware.py

@@ -0,0 +1,11 @@
+from fastapi.middleware.cors import CORSMiddleware
+from fastapi import FastAPI
+
+def add_middlewares(app: FastAPI):
+    app.add_middleware(
+        CORSMiddleware,
+        allow_origins=["*"],
+        allow_credentials=True,
+        allow_methods=["*"],
+        allow_headers=["*"],
+    )