Add logo

Author: markuswustenberg

README.md

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 # GAI for OpenAI
 
+<img src="logo.jpg" alt="Logo" width="300" align="right">
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 [![CI](https://github.com/maragudk/openai/actions/workflows/ci.yml/badge.svg)](https://github.com/maragudk/openai/actions/workflows/ci.yml)
 
 [GAI](https://github.com/maragudk/gai) client for [OpenAI](https://openai.com) models and compatible APIs, such as [LlamaCPP](https://github.com/ggml-org/llama.cpp).