[REFACTOR] Twenty UI multi barrel (#11301)

# Introduction
closes https://github.com/twentyhq/core-team-issues/issues/591
Same than for `twenty-shared` made in
https://github.com/twentyhq/twenty/pull/11083.

## TODO
- [x] Manual migrate twenty-website twenty-ui imports

## What's next:
- Generate barrel and migration script factorization within own package
+ tests
- Refactoring using preconstruct ? TimeBox
- Lint circular dependencies
- Lint import from barrel and forbid them

### Preconstruct
We need custom rollup plugins addition, but preconstruct does not expose
its rollup configuration. It might be possible to handle this using the
babel overrides. But was a big tunnel.
We could give it a try afterwards ! ( allowing cjs interop and stuff
like that )
Stuck to vite lib app

Closed related PRs:
- https://github.com/twentyhq/twenty/pull/11294
- https://github.com/twentyhq/twenty/pull/11203

packages/twenty-ui/src/testing/decorators/RecoilRootDecorator.tsx

@@ -0,0 +1,9 @@
+import { Decorator } from '@storybook/react';
+
+import { RecoilRoot } from 'recoil';
+
+export const RecoilRootDecorator: Decorator = (Story, _context) => (
+  <RecoilRoot>
+    <Story />
+  </RecoilRoot>
+);

packages/twenty-ui/src/testing/index.ts

@@ -1,8 +1,27 @@
-export * from './ComponentStorybookLayout';
-export * from './decorators/CatalogDecorator';
-export * from './decorators/ComponentDecorator';
-export * from './decorators/ComponentWithRouterDecorator';
-export * from './decorators/RouterDecorator';
-export * from './mocks/avatarUrlMock';
-export * from './types/CatalogStory';
-export * from './utils/getCanvasElementForDropdownTesting';
+/*
+ * _____                    _
+ *|_   _|_      _____ _ __ | |_ _   _
+ *  | | \ \ /\ / / _ \ '_ \| __| | | | Auto-generated file
+ *  | |  \ V  V /  __/ | | | |_| |_| | Any edits to this will be overridden
+ *  |_|   \_/\_/ \___|_| |_|\__|\__, |
+ *                              |___/
+ */
+
+export { ComponentStorybookLayout } from './ComponentStorybookLayout';
+export type {
+  CatalogDimension,
+  CatalogOptions,
+} from './decorators/CatalogDecorator';
+export { CatalogDecorator } from './decorators/CatalogDecorator';
+export { ComponentDecorator } from './decorators/ComponentDecorator';
+export type { RouteParams } from './decorators/ComponentWithRouterDecorator';
+export {
+  isRouteParams,
+  computeLocation,
+  ComponentWithRouterDecorator,
+} from './decorators/ComponentWithRouterDecorator';
+export { RecoilRootDecorator } from './decorators/RecoilRootDecorator';
+export { RouterDecorator } from './decorators/RouterDecorator';
+export { AVATAR_URL_MOCK } from './mocks/avatarUrlMock';
+export type { CatalogStory } from './types/CatalogStory';
+export { getCanvasElementForDropdownTesting } from './utils/getCanvasElementForDropdownTesting';