Provide Hawtio minimum console war about hawtio

[tadayosi]

This approach still has a limitation: It is that while the Camel plugin can be disabled, its JS is still needed to be bundled in the hawtio-minimal.war. That means the minimal console still needs to download 13.6MB of JS it doesn't use at all.

It's the limitation of Webpack Module Federation we are using for the plugin mechanism.
https://medium.com/@marvusm.mmi/webpack-module-federation-think-twice-before-sharing-a-dependency-18b3b0e352cb

To resolve it, we'd need to split @hawtio/react into the core essential part and the optional plugins (@hawtio/plugins). For records, we tried that earlier but it was left incomplete: hawtio/hawtio-next#229