Fix: sanitise options before passing to worker-loader

[jackyef]

I am using multi to be able to instantiate multiple workers. Here is how I am using comlink-loader in my code.

const Worker = await import(
        /* webpackChunkName: "workerized-decode-qr" */ 'comlink-loader?multi&inline!../utils/WorkerisedCode'
      ).then(m => m.default);

Upon building, I got this error.

ValidationError: Worker Loader Invalid Options

options['multi'] is an invalid additional property

Apparently, comlink-loader is forwarding all options it receives to worker-loader. This PR adds a sanitation step before passing options to worker-loader

Build is successful on my machine. Not sure what is causing the CI to fail.

➜  comlink-loader git:(master) npm run build

> comlink-loader@1.1.0 build /Users/jacky/Personal/Projects/comlink-loader
> microbundle --inline none --format cjs --no-compress src/*.js

Build output to dist:
        186 B: comlink-worker-loader.js
        554 B: comlink-loader.js

[developit]

Looks great!

[developit]

The CI failure is my fault, will fix.