Files v2 - Add new FILES field type (#17236)

In this PR : 
- New field type FieldMetadataType.FILES added (as jsonb in DB)
- Backend: GraphQL types, validation, REST API schema, data processor
handling
- Frontend: field configuration in settings
- Feature flag IS_FILES_FIELD_ENABLED to gate the feature
- Integration tests for create/filter validation
- Dev seed: Feature flag enabled + FILES field on survey result object


To do in next PRs : 
- Backend : 
-- new workspaceFile controller (for download) & new workspaceFile
upload resolver (for upload)
-- pre-hook/post-hook to ensure fileId existence + listener to ensure
cleaning
- Frontend : FILES field display/edit in table view, record, ...

packages/twenty-shared/src/constants/FilesFieldMaxNumberOfValues.ts

@@ -0,0 +1 @@
+export const FILES_FIELD_MAX_NUMBER_OF_VALUES = 10;

packages/twenty-shared/src/constants/index.ts

@@ -17,6 +17,7 @@ export { DEFAULT_RELATIVE_DATE_FILTER_VALUE } from './DefaultRelativeDateFilterV
 export { FIELD_FOR_TOTAL_COUNT_AGGREGATE_OPERATION } from './FieldForTotalCountAggregateOperation';
 export { MAX_OPTIONS_TO_DISPLAY } from './FieldMetadataMaxOptionsToDisplay';
 export { FIELD_RESTRICTED_ADDITIONAL_PERMISSIONS_REQUIRED } from './FieldRestrictedAdditionalPermissionsRequired';
+export { FILES_FIELD_MAX_NUMBER_OF_VALUES } from './FilesFieldMaxNumberOfValues';
 export { GROUP_BY_DATE_GRANULARITY_THAT_REQUIRE_TIME_ZONE } from './GroupByDateGranularityThatRequireTimeZone';
 export { LABEL_IDENTIFIER_FIELD_METADATA_TYPES } from './LabelIdentifierFieldMetadataTypes';
 export { MULTI_ITEM_FIELD_DEFAULT_MAX_VALUES } from './MultiItemFieldDefaultMaxValues';