Use deno task to see available tasks and to run them.
To test the cli locally, use deno install --no-check -A -f --unstable -n gustwind ./gustwind-cli/mod.ts. A symlink would likely work as well.
Make sure you have a recent version of Node installed (18 or higher) and then run npm install netlify-cli -g. After that the development environment is available through deno task start:netlify. Note that it depends on a static build so run deno task build first to generate one.
There's a good overview of Netlify edge functions and Netlify serverless functions. Also the tutorial on how to generate OG images on the fly is handy.
Publishing to deno.land goes through the publish utility.
deno task build:gustwind-for-npm <VERSION>whereVERSIONis0.1.0for examplecd gustwind/npmnpm publish. You may need to pass--otphere as well (preferred for security)