* fix/interval-cast-rewrite:
### Enhance Interval Parsing and Casting
- **`create_parser.rs`**: Added a test case `test_parse_interval_cast` to verify the parsing of interval casts.
- **`expand_interval.rs`**: Refactored interval casting logic to handle `CastKind` and `format` attributes. Removed the `create_interval` function and integrated its logic directly into the casting process.
- **`interval.result`**: Updated test results to reflect changes in interval representation, switching from `IntervalMonthDayNano` to `Utf8` format for interval operations.
* reformat code
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