[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-front/src/modules/settings/roles/role-settings/components/SettingsRoleSettings.tsx

@@ -6,7 +6,7 @@ import { IconPicker } from '@/ui/input/components/IconPicker';
 import { TextArea } from '@/ui/input/components/TextArea';
 import { TextInput } from '@/ui/input/components/TextInput';
 import { useRecoilState } from 'recoil';
-import { Section } from 'twenty-ui';
+import { Section } from 'twenty-ui/layout';
 
 const StyledInputsContainer = styled.div`
   display: flex;

packages/twenty-front/src/modules/settings/roles/role-settings/components/stories/SettingsRoleSettings.stories.tsx

@@ -3,10 +3,10 @@ import { settingsDraftRoleFamilyState } from '@/settings/roles/states/settingsDr
 import { Meta, StoryObj } from '@storybook/react';
 import { useSetRecoilState } from 'recoil';
 import { isDefined } from 'twenty-shared/utils';
-import { ComponentDecorator, RouterDecorator } from 'twenty-ui';
 import { PENDING_ROLE_ID } from '~/pages/settings/roles/SettingsRoleCreate';
 import { I18nFrontDecorator } from '~/testing/decorators/I18nFrontDecorator';
 import { getRolesMock } from '~/testing/mock-data/roles';
+import { ComponentDecorator, RouterDecorator } from 'twenty-ui/testing';
 
 const SettingsRoleSettingsWrapper = (
   args: React.ComponentProps<typeof SettingsRoleSettings>,