Add OAuth support for upstream MCP servers (#381)

Co-authored-by: samanhappy <samanhappy@gmail.com>

package.json

@@ -46,7 +46,7 @@
   "license": "ISC",
   "dependencies": {
     "@apidevtools/swagger-parser": "^12.0.0",
-    "@modelcontextprotocol/sdk": "^1.18.1",
+    "@modelcontextprotocol/sdk": "^1.20.2",
     "@types/adm-zip": "^0.5.7",
     "@types/bcrypt": "^6.0.0",
     "@types/multer": "^1.4.13",
@@ -66,6 +66,7 @@
     "multer": "^2.0.2",
     "openai": "^4.104.0",
     "openapi-types": "^12.1.3",
+    "openid-client": "^6.8.1",
     "pg": "^8.16.3",
     "pgvector": "^0.2.1",
     "postgres": "^3.4.7",