Add `delete_files`

### Feature Request / Improvement

Hello All,

First of all, apologies as I am not very experienced with PyIceberg.

I currently have a Java application that "manually" updates table metadata and can add new files if they don't exist and replace older files if they already do. This guarantees that, as long as the file names are fixed, I should not have duplicates.

In Java, I use [deleteFile](https://iceberg.apache.org/javadoc/0.13.1/org/apache/iceberg/DeleteFiles.html#deleteFile-java.lang.CharSequence-) and then [addFile](https://iceberg.apache.org/javadoc/0.13.1/org/apache/iceberg/OverwriteFiles.html#addFile-org.apache.iceberg.DataFile-).

In PyIceberg, I can [Add Files](https://py.iceberg.apache.org/api/#add-files), but I don't see options to "Delete Files" or overwrite.

Is `delete_files()` a feature that you could add?

Comienza con la API Add Files existente de PyIceberg y compara su comportamiento con las APIs Java DeleteFiles y OverwriteFiles enlazadas. Define la semántica compatible de delete_files u overwrite y verifica que la funcionalidad completada permita a los llamadores eliminar o reemplazar archivos de datos existentes sin crear duplicados.

Escrito por el modelo de indexación a partir del texto del issue.