[Java] Add Apache Mnemonic (incubating) as alternative allocator for storage-class memory support

**Reporter**: [Wes McKinney](https://issues.apache.org/jira/browse/ARROW-1760) / @wesm
#### PRs and other links:
- [GitHub Pull Request apache/arrow#36](https://github.com/apache/arrow/pull/36)

_{**Note**: *This issue was originally created as [ARROW-1760](https://issues.apache.org/jira/browse/ARROW-1760). Please see the [migration documentation](https://github.com/apache/arrow/issues/14542) for further details.*}

首先查看連結的 pull request apache/arrow#36，以及 issue 中對 Apache Mnemonic 和儲存類別記憶體的參照。根據這項工作確定還需要完成哪些整合，並且只有在替代 allocator 支援已實作並經過驗證後，才將該 issue 視為完成。

由索引模型根據 Issue 內容生成。