add_files support parquet files with field ids

### Feature Request / Improvement

I am using rust to commit to iceberg rest catalogue, however that requires field id's to be written for commit, however when I try to commit those same files using pyIceberg ( In case of re-initialisation ).
This error is shown
```
fb0b1e42-2c49-434c-b39a-da4586e7ef05-die_info.parquet because it has field IDs. `add_files` only supports addition of files without field_ids
```
If it is not assigned to someone I believe I can work on this.
Thanks!s

Start by locating the add_files entry point and reading how it currently handles Parquet files with field IDs. The work is done when add_files accepts the field-ID-bearing files described in the report while preserving existing support for files without field IDs.

Written by the indexing model from the issue text.