Changes to Creating XLSX file export for elements

removed the enum value element_to_export of the request property config/header

added the new optional request property classId

added the new optional request property columns/items/config/items/anyOf[subschema #2: Advanced Column Config]/advancedColumns/items/config/items/anyOf[subschema #1: Relation Field Config]/groupId

added the new optional request property columns/items/config/items/anyOf[subschema #2: Advanced Column Config]/advancedColumns/items/config/items/anyOf[subschema #1: Relation Field Config]/keyId

added the new optional request property columns/items/config/items/anyOf[subschema #2: Advanced Column Config]/advancedColumns/items/config/items/anyOf[subschema #2: Simple Field Config]/groupId

added the new optional request property columns/items/config/items/anyOf[subschema #2: Advanced Column Config]/advancedColumns/items/config/items/anyOf[subschema #2: Simple Field Config]/keyId

added the new optional request property columns/items/width

added the new configuration_ids enum value to the request property config/header

added the new configuration_type enum value to the request property config/header

added the new element_type_to_batch_delete enum value to the request property config/header

added the new element_type_to_rewrite_references enum value to the request property config/header

added the new element_type_to_tag enum value to the request property config/header

added the new elements_to_export enum value to the request property config/header

added the new elements_to_rewrite_references enum value to the request property config/header

added the new elements_to_tag enum value to the request property config/header

added the new export_format enum value to the request property config/header

added the new items_to_batch_delete enum value to the request property config/header

added the new items_to_delete enum value to the request property config/header

added the new items_to_restore enum value to the request property config/header

added the new new_owner_id enum value to the request property config/header