* feat: adding session support
* readme: adding --session info in examples/talk-llama
* llama: adding session fixes
* readme: updating session doc
* talk-llama: update the value of need_to_save_session to true in order to save the session in the subsequent interaction
* talk-llama: adding missing function which updates session_tokens
There is `speak.sh` file in `./examples/talk-llama` as described in README.
However `./examples/talk/speak.sh` is used in `talk-llama.cpp`, this commit corrects that.