Langchain (#20)

* fix bug

* langchian function

* embedding test complete

* langchain test

* langchain preview

* readme

temperature support (#18)

* refactoring: Rootview

* add system prompt and topk, topp

* temperature support

* fix build error

9 앱 설정추가 (#13)

* baseurl 변경, 모델변경 추가

* add swift soup

* tag manager

* tag pull and remove