LlamaEdge-StableDiffusion 0.2.3

Major changes:

• (NEW) Support API key
  • Use API_KEY environment variable to set api-key when start API server, for example

    export LLAMA_API_KEY=12345-6789-abcdef
    wasmedge --dir .:. --env API_KEY=$LLAMA_API_KEY \
      sd-api-server.wasm \
      ...
      ...
• Improve the url of the generated image