[Umbrella] Implement PendingUpdate subclasses

This issue tracks the progress of implementation of `PendingUpdate` subclasses. To implement each subclass, we need to make sure that following goals are met:

1. Implement respective functions in the [`TableMetadataBuilder`](https://github.com/apache/iceberg-cpp/blob/dbcbdf23ff7ebe5510431715fd66c7841df3d9fd/src/iceberg/table_metadata.h#L196) for this kind of update.
2. Implement respective [`TableUpdate`](https://github.com/apache/iceberg-cpp/blob/main/src/iceberg/table_update.h) subclass (if exists) to apply uncommitted changes to TableMetadataBuilder and generate update requirements.
3. Expose the new update as an interface to [`Table`](https://github.com/apache/iceberg-cpp/blob/main/src/iceberg/table.h) and [`Transaction`](https://github.com/apache/iceberg-cpp/blob/main/src/iceberg/transaction.h) classes.

Below is the list of subclasses that are expected to add. They should be put into the `iceberg/update` subdirectory.

### Medadata Update:

Unlike Java, we don't need pure interface for these classes.

- [x] UpdateProperties @WZhuo
- [x] ReplaceSortOrder @HeartLinked
- [x] UpdateSchema @gty404
- [x] UpdatePartitionSpec @zhjwpku
- [x] ManageSnapshots (<- SnapshotManager) @zhjwpku
- [x] SetSnapshot @HeartLinked
- [x] UpdateLocation (<- SetLocation) @HeartLinked
- [x] UpdatePartitionStatistics @HeartLinked
- [x] UpdateSnapshotReference @zhjwpku
- [x] UpdateStatistics @HeartLinked
- [x] ExpireSnapshots @dongxiao1198 @shangxinli

### Data Update:

For these classes, we still need intermediate interfaces and classes to consolidate common logic.

- [x] SnapshotUpdate(SnapshotProducer) @zhjwpku
- [x] FastAppend @zhjwpku
- [ ] MergingSnapshotProducer @gty404 (planned in 0.3.0)
- [ ] OverwriteFiles @gty404 (planned in 0.3.0)
- [ ] RowDelta
- [ ] MergeAppend
- [ ] DeleteFiles
- [ ] RewriteFiles
- [ ] ReplacePartitions
- [ ] RewriteManifests
- [ ] CherryPickOperation

从 iceberg/update 目录中列出的未勾选子类开始，并将它们与已完成的实现进行比较。阅读 src/iceberg/table_metadata.h、src/iceberg/table_update.h、src/iceberg/table.h 和 src/iceberg/transaction.h，以跟踪所需的元数据、更新和公共接口。选定的子类已实现，并通过相关的 Table 和 Transaction API 对外提供，即表示完成。

由索引模型根据 Issue 内容生成。