Generate hashed javascript bundles

[lordrip]

Please describe the task that needs to be done

Description

The result artifacts after building the UI are a named bundle (main.js) and numbered bundles. This brings the risk of those assets being cached and causing strange behaviors not easily reproducible for users of the application.

This could be remediated by not caching any js file but then we would be missing the caching mechanism for other bundles like the Monaco editor.

Goal

Change the way how the artifacts are built to always output a hash in order to make them cacheable by the browser per version.

Webpack related topic