Add sort feature for Links type (#6503)

Closes #5741

Filtering was already working.

I just added the required logic in the frontend to allow sorting by
primary link url (because label can be empty)

Author: lucasbordeau

packages/twenty-front/src/modules/object-metadata/constants/SortableFieldMetadataTypes.ts

@@ -12,4 +12,5 @@ export const SORTABLE_FIELD_METADATA_TYPES = [
   FieldMetadataType.FullName,
   FieldMetadataType.Rating,
   FieldMetadataType.Currency,
+  FieldMetadataType.Links,
 ];

packages/twenty-front/src/modules/object-metadata/utils/getOrderByForFieldMetadataType.ts

@@ -1,6 +1,7 @@
 import { FieldMetadataItem } from '@/object-metadata/types/FieldMetadataItem';
 import { OrderBy } from '@/object-metadata/types/OrderBy';
 import { RecordGqlOperationOrderBy } from '@/object-record/graphql/types/RecordGqlOperationOrderBy';
+import { FieldLinksValue } from '@/object-record/record-field/types/FieldMetadata';
 import { FieldMetadataType } from '~/generated-metadata/graphql';
 
 export const getOrderByForFieldMetadataType = (
@@ -25,6 +26,14 @@ export const getOrderByForFieldMetadataType = (
           },
         },
       ];
+    case FieldMetadataType.Links:
+      return [
+        {
+          [field.name]: {
+            primaryLinkUrl: direction ?? 'AscNullsLast',
+          } satisfies { [key in keyof FieldLinksValue]?: OrderBy },
+        },
+      ];
     default:
       return [
         {