Feat/performance-refactor-styled-component (#5516)

In this PR I'm optimizing a whole RecordTableCell in real conditions
with a complex RelationFieldDisplay component :
- Broke down getObjectRecordIdentifier into multiple utils
- Precompute memoized function for getting chip data per field with
useRecordChipDataGenerator()
- Refactored RelationFieldDisplay
- Use CSS modules where performance is needed instead of styled
components
- Create a CSS theme with global CSS variables to be used by CSS modules

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

@@ -0,0 +1,24 @@
+import { CoreObjectNameSingular } from '@/object-metadata/types/CoreObjectNameSingular';
+import { FieldMetadataItem } from '@/object-metadata/types/FieldMetadataItem';
+import { ObjectRecord } from '@/object-record/types/ObjectRecord';
+import { FieldMetadataType } from '~/generated-metadata/graphql';
+import { isDefined } from '~/utils/isDefined';
+
+export const getLabelIdentifierFieldValue = (
+  record: ObjectRecord,
+  labelIdentifierFieldMetadataItem: FieldMetadataItem | undefined,
+  objectNameSingular: string,
+) => {
+  if (
+    objectNameSingular === CoreObjectNameSingular.WorkspaceMember ||
+    labelIdentifierFieldMetadataItem?.type === FieldMetadataType.FullName
+  ) {
+    return `${record.name?.firstName ?? ''} ${record.name?.lastName ?? ''}`;
+  }
+
+  if (isDefined(labelIdentifierFieldMetadataItem?.name)) {
+    return record[labelIdentifierFieldMetadataItem.name] as string | number;
+  }
+
+  return '';
+};