Create script for creating web_miner.js

[sdoeringNew]

The web_miner.js is custom build out of the original files from moneroocean.stream.

cn.wasm
cn.min.js
worker.js
a small part of build.min.js

And there is a fraction of custom code.

To enhance transparency of what's inside the web_miner.js there shall be a script creating this web_miner.js.