readme : add UI of ChatPDFLocal which is based by llama.cpp for running LLMs on Mac

[ljeagle]

Add ChatPDFLocal which is a MacOS app for chatting local PDF, and it is supported by llama.cpp for running LLMs on Mac.

[arch-btw]

Please note:

(to have a project listed here, it should clearly state that it depends on llama.cpp)

[papersgpt]

Please note:

(to have a project listed here, it should clearly state that it depends on llama.cpp)

The project site is www.chatpdflocal.com, and it has clearly stated that ChatPDFLocal runs local LLMs based on llama.cpp on the main page.

[arch-btw]

Thanks for updating it, it wasn't there earlier that's why I asked:

[papersgpt]

Pleasure! We have always used llama.cpp in ChatPDFLocal, we love llama.cpp very much, just forgot to update our website before.

[papersgpt]

Please review, thanks!