rag-server application with wasmedge 

bug fixed with using llama-3-chat instead of llama-2-chat
wasmedge --dir .:. \
--nn-preload default:GGML:AUTO:Meta-Llama-3-8B-Instruct-Q5_K_M.gguf \
--nn-preload embedding:GGML:AUTO:all-MiniLM-L6-v2-ggml-model-f16.gguf \
rag-api-server.wasm -p llama-3-chat,embedding --web-ui ./chatbot-ui \
--model-name Meta-Llama-3-8B-Instruct-Q5_K_M,all-MiniLM-L6-v2-ggml-model-f16 \
--ctx-size 4096,384 \
--rag-prompt "Use the following context to answer the question.
----------------
" \
--log-prompts --log-stat