refactor: refactor prompts and use langchain to help us parse openai output

Author: ahonn

package.json

@@ -11,6 +11,7 @@
   "dependencies": {
     "@logseq/libs": "^0.0.14",
     "axios": "^1.3.4",
+    "langchain": "^0.0.81",
     "openai": "^3.2.1",
     "react": "^18.2.0",
     "react-dom": "^18.2.0"