(fix)(chat):fix typo in s2sql and add prompt to output. (#581)

* 1.refactor the retrieval module. 2.refactor the http service module. 3.upgrade text2sql output format the parse for absolute time related expression in query.

* fix bug.

* upgrade the config module, now support config llm suppoted by langchain.

* fix conflicts.

* update text2sql config reload to be compitable with new config format.

* modify default config.

* 1.add self-consistency feature for text2sql. 2.upgrade llm api call from sync to async. 3.refactor text2sql module. 4. refactor semantical retriever modules.

* merege with upstream master

* add general retrieve service.

* add api service for sql_agent for crud opereations of few-shots examples.

* modify requirements

* add auto-cot feature

* 1. output log to a fixed log file.  2.allow few-shots examples tied to data model, and add strategy that extend examples when retrieved examples tied to a data model is not enough. 3. fix misformat in s2ql args.

* add prior_ext to output.

* fix type in in s2sql

* add prompt to output.

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Co-authored-by: shaoweigong <shaoweigong@tencent.com>

chat/python/few_shot_example/s2sql_exemplar.py

@@ -1,4 +1,4 @@
-examplars= [
+exemplars= [
     {   "currentDate":"2020-12-01",
         "tableName":"内容库产品",
         "fieldsList":"""["部门", "模块", "用户名", "访问次数", "访问人数", "访问时长", "数据日期"]""",