[pre-req] New Component Layout proposal

[clintandrewhall]

This is a PR abstracted from #69357 and is a pre-req for the functionality it provides.

Summary

I'm proposing a new structure for our components that is demonstrated here with asset and asset_manager:

- components
  - foo                       <- directory
    - index.ts                <- thin exporting index, (no redux)
    - foo.ts                  <- redux container
    - foo.component.tsx       <- react component
  - bar
    - index.ts                <- thin exporting index, (no redux)
    - bar.ts                  <- redux container
    - bar.component.tsx       <- react component, consumes sub-component container
    - bar_dep.ts              <- redux sub-component container
    - bar_dep.component.tsx   <- sub-component

The root exporting file would then no longer by a redux container, but rather a thin index:

export { Foo } from './foo';
export { Foo as FooComponent } from './foo.component';

Notes

• I'm excluding from Storyshots testing any Storybook stories whose titles start with redux. This is to avoid storyshot bloat, (as Redux-enabled stories could likely include much more markup, and, as they are dynamic in nature, a shot of the beginning structure is not as helpful).
• This PR includes a rudimentary Redux Provider for the Asset examples. This is temporary, as [Canvas][PoC] Add Redux Inspector to Storybook; standardize names and convert a few stories #69357 provides a much more robust solution and will be in a follow-on PR.

[elasticmachine]

Pinging @elastic/kibana-canvas (Team:Canvas)

[poffdeluxe]

I really like this setup! Feels easier to get at either the redux wrapped or non-redux components. And heck yes to having the contributing guidelines!

[clintandrewhall]

@elasticmachine merge upstream

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: 0f500eb

Build metrics

async chunks size

id	value	diff	baseline
canvas	1.5MB	-772.0B	1.5MB

page load bundle size

id	value	diff	baseline
canvas	1.4MB	+153.0B	1.4MB

History

• 💔 Build #63386 failed aa19c26
• 💚 Build #63344 succeeded fb1ec85
• 💚 Build #62843 succeeded 179a343
• 💔 Build #62839 failed 05dab35
• 💔 Build #62829 failed 060ae7e

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream