Add feature extractor and safety checker

model_index.json

@@ -2,13 +2,13 @@
   "_class_name": "StableDiffusionPipeline",
   "_diffusers_version": "0.11.1",
   "feature_extractor": [
-    null,
-    null
+    "transformers",
+    "CLIPImageProcessor"
   ],
-  "requires_safety_checker": null,
+  "requires_safety_checker": true,
   "safety_checker": [
-    null,
-    null
+    "stable_diffusion",
+    "StableDiffusionSafetyChecker"
   ],
   "scheduler": [
     "diffusers",