[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

從 https://py.iceberg.apache.org/api/#inspecting-tables 中記載的 PyIceberg 資料表檢查入口開始，接著將其支援的中繼資料資料表與權威來源 Apache Iceberg MetadataTableType 進行比較。完成標準是：除了已列出的中繼資料資料表外，也支援 ALL_ENTRIES 和 POSITION_DELETES。

由索引模型根據 Issue 內容生成。