Changes inside .storybook directory:
* Provide a minimal working global.mw instance to render our components
* Update styles to have sensible defaults and provide icons shipped from
Wikimedia Beta cluster to avoid having to replicate ResourceLoaderImageModule
* pull in additional files that need to be resolved from core

Changes inside stories folder:
the stories themselves!

Note:
⚠️ story is used to signal where components may not match production.

Depends-On: Ib7e19a440ba095d6424d35305fb41d643ca9764c
Bug: T231489
Change-Id: I635479d567643dcda31a74fb38f4bfaa18a858e7