Ability to load web types from webjars

Applications on the JVM like to use [webjars](https://www.webjars.org/). Would it be possible to support having a `web-types.json` file somewhere in the JAR file and that it would be used automatically by IntelliJ IDEA ?

The issue is similar to https://github.com/JetBrains/web-types/issues/55 and https://github.com/JetBrains/web-types/issues/92 I think in that there also would be no package.json (Or maybe there is, but there also web types coming from imported JAR files).

Start by examining the web-types.json format and how webjars package files inside JAR archives for IntelliJ IDEA. Determine the supported location and discovery path for a web-types.json file in an imported JAR, then verify that the web types are loaded automatically without a package.json.

Written by the indexing model from the issue text.