[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/activities/blocks/components/FileBlock.tsx

@@ -2,13 +2,13 @@ import { createReactBlockSpec } from '@blocknote/react';
 import styled from '@emotion/styled';
 import { isNonEmptyString } from '@sniptt/guards';
 import { ChangeEvent, useRef } from 'react';
-import { Button } from 'twenty-ui';
 import { isUndefinedOrNull } from '~/utils/isUndefinedOrNull';
 
 import { AttachmentIcon } from '../../files/components/AttachmentIcon';
 import { AttachmentType } from '../../files/types/Attachment';
 import { getFileType } from '../../files/utils/getFileType';
 import { isDefined } from 'twenty-shared/utils';
+import { Button } from 'twenty-ui/input';
 
 const StyledFileInput = styled.input`
   display: none;

packages/twenty-front/src/modules/activities/blocks/utils/getSlashMenu.ts

@@ -1,4 +1,8 @@
 import { getDefaultReactSlashMenuItems } from '@blocknote/react';
+
+import { SuggestionItem } from '@/ui/input/editor/components/CustomSlashMenu';
+
+import { BLOCK_SCHEMA } from '../constants/Schema';
 import {
   IconCode,
   IconComponent,
@@ -15,11 +19,7 @@ import {
   IconPilcrow,
   IconTable,
   IconVideo,
-} from 'twenty-ui';
-
-import { SuggestionItem } from '@/ui/input/editor/components/CustomSlashMenu';
-
-import { BLOCK_SCHEMA } from '../constants/Schema';
+} from 'twenty-ui/display';
 
 const Icons: Record<string, IconComponent> = {
   'Heading 1': IconH1,