Added feedback comparison endpoint

A new HTTP POST request has been added to the chatgpt API. This endpoint is used for submitting feedback on message comparisons. The payload includes various parameters such as original and new message IDs, rating, conversation ID, tags, completion comparison rating, and timestamps related to the feedback process.

example/idea/chatgpt.http

@@ -409,3 +409,31 @@ POST {{baseUrl}}/chatgpt/synthesize?message_id={{message_id}}&conversation_id={{
 Authorization: Bearer {{accessToken}}
 Accept: */*
 
+### Message Compare feedback
+POST {{baseUrl}}/chatgpt/backend-api/conversation/message_comparison_feedback
+accept: */*
+authorization: Bearer {{accessToken}}
+Content-Type: application/json
+
+{
+  "feedback_version": "skippable_parallel_2_in_stream:a:1.0",
+  "original_message_id": "9de9e3db-8d3b-4c37-9647-d562468e056b",
+  "new_message_id": "13525dfa-e7d0-4e2e-b8d5-8c2878fea7f2",
+  "rating": "none",
+  "conversation_id": "fc1bdb68-5bbe-4095-8815-b79049d59d38",
+  "text": "",
+  "tags": [],
+  "completion_comparison_rating": "skip_without_completion",
+  "new_completion_placement": "right",
+  "feedback_start_time": 1712082568089,
+  "compare_step_start_time": 1712082568089,
+  "original_completion_load_start_time": 1712082568089,
+  "original_completion_load_end_time": null,
+  "new_completion_load_start_time": 1712082568089,
+  "new_completion_load_end_time": null,
+  "frontend_submission_time": 1712082605628,
+  "timezone_offset_min": -480
+}
+
+###
+