Gptee: LLMs done the Unix-y way

The idea behind gptee is to bring composability to language models at the shell script level. In line with the unix philosophy, we simplify the LLM interface to just stdin and stdout

https://en.wikipedia.org/wiki/Unix_philosophy

Please specify in the README near the top that this uses OpenAI's API and does not run the model locally. I thought this was neat until I looked to see if it used the API.