Bulk create catalogue item fields

### Filtering The request body is an **array of filter objects**. Send an empty array (`[]`) to retrieve all records. Each filter object has the following fields: | Field | Type | Description | |---|---|---| | `attribute` | string | The field to filter on (see Supported attributes below) | | `operator` | string | Comparison operator (see Available operators below) | | `values` | array | One or more `{ "value": <scalar> }` objects | **Available operators** | Operator | Meaning | |---|---| | `EQUALS` | Exact match | | `NOT_EQUALS` | Exclude exact match | | `IN` / `IS_ANY_OF` | Match any value in the list | | `IS_NOT_ANY_OF` | Exclude all listed values | | `IS_BETWEEN` | Inclusive range — pass exactly two values: `[start, end]` | | `IS_ON_OR_BEFORE` / `IS_ON_OR_AFTER` | Date/time boundary comparisons | | `CONTAINS` / `TEXT_CONTAINS` | Substring or set membership | | `IS_NULL` / `IS_NOT_NULL` | Null checks — `values` array can be empty | | `STARTS_WITH` / `ENDS_WITH` | String prefix/suffix match |