Improve light client support

[mfornos]

• Generate Esbuild browser bundle
• Worker-threads compatibility via developit/web-worker lib
• Test out in vite builds
• Test out complete package in browser and node platforms (ensure nothing broken, test in external project and in examples/)
• Adjust log level in the browser
• Simplify usage with Vite (i.e. import worker directly from SDK and add browser export hint for worker entrypoint... :P)

[mfornos]

Example Web App usage with Vite.

// ...
import SmolWorker from "@sodazone/ocelloids-sdk/worker?worker"

function createApis() {
  const provider = new ScProvider(
    Smoldot, polkadot
  );

  provider.connect({
    embeddedNodeConfig: {
      workerFactory: () => {
        return new SmolWorker({
          name: 'oc-smoldot'
        });
      }
    }
  });

  return new SubstrateApis({
    lc: { provider }
  });
}

vite.config.js:

import { defineConfig } from 'vite'
import react from '@vitejs/plugin-react-swc'

// https://vitejs.dev/config/
export default defineConfig({
  plugins: [react()]
})

It bundles properly a production build.