download wit files with wkg fetch command

migrate from cargo-component to wasm32-wasip2

Refactor the code

Enable runtime to run Wasm modules in addition to the components

organize the projects

reorganize the projects

code cleanup

add codes to try wasm32-wasip1-threads

remove unused code

add an example of WIT resource

add wat file for each memory representation

Add a runner and a Docker file to generate a docker image to run the runner

add a hello world implementing wasi:http/proxy

removed png-glitch-with-media-device sample

png-glitch working with MediaStreamTrack