Feat/multivalue limit (#14961)

## Summary
1. This change introduces the ability to limit how many values a
multi-value field can contain (for example: maximum number of emails,
phone numbers, links, or array items).
2. It centralizes the limit as a shared constant and type, validates
settings on the server, updates front-end types and components to
consume the setting, and adds a small settings UI so workspace admins
can change the limit per field.
3. Default behavior is preserved: if no max is configured, the existing
default (10) is used.


## **Fixes Issue:** [#14740
](https://github.com/twentyhq/twenty/issues/14740)

## Manual Test Screenshot
<img width="383" height="451" alt="Screenshot 2025-10-08 002413"
src="https://github.com/user-attachments/assets/a7704af6-10ef-4d10-b8c9-a9eeca03bfd9"
/>


### Values in fields


https://github.com/user-attachments/assets/7f59c4f7-3aca-4f83-8c04-3d44988316e3


Let me know if any changes are needed

---------

Co-authored-by: Félix Malfait <felix@twenty.com>
Co-authored-by: Félix Malfait <felix.malfait@gmail.com>

packages/twenty-front/src/modules/object-metadata/types/FieldMetadataItem.ts

@@ -1,7 +1,10 @@
 import { type FieldMetadataItemRelation } from '@/object-metadata/types/FieldMetadataItemRelation';
 import { type FieldDateMetadataSettings } from '@/object-record/record-field/ui/types/FieldMetadata';
 
-import { type PartialFieldMetadataItemOption } from 'twenty-shared/types';
+import {
+  type FieldMetadataMultiItemSettings,
+  type PartialFieldMetadataItemOption,
+} from 'twenty-shared/types';
 import { type ThemeColor } from 'twenty-ui/theme';
 import { type Field } from '~/generated-metadata/graphql';
 
@@ -18,6 +21,6 @@ export type FieldMetadataItem = Omit<
   options?: FieldMetadataItemOption[] | null;
   relation?: FieldMetadataItemRelation | null;
   morphRelations?: FieldMetadataItemRelation[] | null;
-  settings?: FieldDateMetadataSettings;
+  settings?: FieldDateMetadataSettings | FieldMetadataMultiItemSettings | null;
   isLabelSyncedWithName?: boolean | null;
 };