Added prompts and default prompt

config_sentence_transformers.json

@@ -4,6 +4,9 @@
     "transformers": "4.38.2",
     "pytorch": "2.2.0a0+81ea7a4"
   },
-  "prompts": {},
-  "default_prompt_name": null
+  "prompts": {
+    "query": "query: ",
+    "passage": "passage: "
+  },
+  "default_prompt_name": "query"
 }