[feat] add missing metadata tables

### Feature Request / Improvement

Looks like there are a few more metadata tables currently missing in PyIceberg.

Source of truth for metadata tables: https://iceberg.apache.org/javadoc/latest/org/apache/iceberg/MetadataTableType.html

Done: https://py.iceberg.apache.org/api/#inspecting-tables
- [x] SNAPSHOTS
- [x] PARTITIONS
- [x] ENTRIES
- [x] REFS
- [x] MANIFESTS
- [x] METADATA_LOG_ENTRIES
- [x] HISTORY
- [x] FILES

Missing:
- [x] ALL_DATA_FILES
- [x] ALL_DELETE_FILES
- [ ] ALL_ENTRIES
- [x] ALL_FILES
- [x] ALL_MANIFESTS
- [x] DATA_FILES
- [x] DELETE_FILES
- [ ] POSITION_DELETES

从 https://py.iceberg.apache.org/api/#inspecting-tables 中记录的 PyIceberg 表检查入口开始，然后将其支持的元数据表与权威来源 Apache Iceberg MetadataTableType 进行比较。完成标准是：除已列出的元数据表外，还支持 ALL_ENTRIES 和 POSITION_DELETES。

由索引模型根据 Issue 内容生成。