Unique field - add unique property creation/deletion on field (#13539)

Done : 
- add isUnique prop availability on gql update/create fieldMetadata
resolvers
- add unique index creation logic at update & creation
- add unique index deletion logic at update
- update unique index if field name updated
- edge cases : can't have default value and unique fields / standard
default value excluded from index (where clause) / can't have composite
unique fields / can't create unique fields on MORPH


closes https://github.com/twentyhq/core-team-issues/issues/1222

packages/twenty-server/src/engine/metadata-modules/utils/get-object-metadata-entity-from-object-metadata-item-with-fields-map.util.ts

@@ -0,0 +1,17 @@
+import omit from 'lodash.omit';
+
+import { type ObjectMetadataEntity } from 'src/engine/metadata-modules/object-metadata/object-metadata.entity';
+import { type ObjectMetadataItemWithFieldMaps } from 'src/engine/metadata-modules/types/object-metadata-item-with-field-maps';
+
+export const getObjectMetadataEntityFromObjectMetadataItemWithFieldsMap = (
+  objectMetadataItem: ObjectMetadataItemWithFieldMaps,
+): ObjectMetadataEntity => {
+  return {
+    ...omit(objectMetadataItem, [
+      'fieldsById',
+      'fieldIdByName',
+      'fieldIdByJoinColumnName',
+    ]),
+    fields: Object.values(objectMetadataItem.fieldsById),
+  };
+};