add vtracer command text with command arguments based on slider parameters change

[wis]

I tried to add this myself and create a PR, but it seems like the web app in the repo does not look like the same web app on the website

the website's web app:

the web app in the repo:

I followed instructions in the readme.md, wasm-pack build, npm install, npm run start etc, and opened localhost:8080

Concept design:

[tyt2y3]

The only difference is the CSS haha!