Rename web to api to reflect, that it's not serving the frontend, split FastAPI creation

tests/test_api_surface.py

@@ -44,7 +44,7 @@ class ApiSurfaceTest(unittest.TestCase):
             uploads_dir=f"{cls._workdir.name}/uploads",
             static_dir=f"{cls._workdir.name}/static",
         )
-        cls.spec = Application(settings).api.openapi()
+        cls.spec = Application(settings).web.openapi()
 
     @classmethod
     def tearDownClass(cls) -> None: