Connected authentication to the backend and fixed CORS

main.py

@@ -1,4 +1,5 @@
 from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
 from strawberry.fastapi import GraphQLRouter
 
 from api.schema import schema
@@ -13,5 +14,17 @@ graphql_app = GraphQLRouter(
 
 app = FastAPI()
 
+origins = [
+    "http://localhost:3000",
+]
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=origins,
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
 app.include_router(graphql_app, prefix="/graphql")
 app.mount("/", SPAStaticFiles(directory="frontend/dist", html=True), name="frontend")