openai
* Bump `openai` package to latest Tested all except localai * bump LocalAI support with latest image * add deprecation notice * linting
resolves #1188
bump pplx model support
* add LLM support for perplexity * update README & example env * fix ENV keys in example env files * slight changes for QA of perplexity support * Update Perplexity AI name --------- Co-authored-by: timothycarambat <rambat1010@gmail.com>