readme : update tools list (ggml-org#9475)

* Added link to proprietary wrapper for Unity3d into README.md

Wrapper has prebuild library and was tested on iOS, Android, WebGL, PC, Mac platforms, has online demos like [this](https://d23myu0xfn2ttc.cloudfront.net/rich/index.html) and [that](https://d23myu0xfn2ttc.cloudfront.net/).

* Update README.md

Fixes upon review

Author: OLSecret

README.md

@@ -207,6 +207,7 @@ Unless otherwise noted these projects are open-source with permissive licensing:
 - [akx/ggify](https://github.com/akx/ggify) – download PyTorch models from HuggingFace Hub and convert them to GGML
 - [crashr/gppm](https://github.com/crashr/gppm) – launch llama.cpp instances utilizing NVIDIA Tesla P40 or P100 GPUs with reduced idle power consumption
 - [gpustack/gguf-parser](https://github.com/gpustack/gguf-parser-go/tree/main/cmd/gguf-parser) - review/check the GGUF file and estimate the memory usage
+- [Styled Lines](https://marketplace.unity.com/packages/tools/generative-ai/styled-lines-llama-cpp-model-292902) (proprietary licensed, async wrapper of inference part for game development in Unity3d with prebuild Mobile and Web platform wrappers and a model example)
 
 **Infrastructure:**