[Format] Add metadata for single and double precision complex numbers
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Component: Format
Type: enhancement
- Dominant language
- C++
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Description
Numerical computing libraries like NumPy and TensorFlow feature complex64 and complex128 numbers
**Reporter**: [Wes McKinney](https://issues.apache.org/jira/browse/ARROW-638) / @wesm
#### PRs and other links:
- [GitHub Pull Request #10452](https://github.com/apache/arrow/pull/10452)
- [GitHub Pull Request #10565](https://github.com/apache/arrow/pull/10565)
**Note**: *This issue was originally created as [ARROW-638](https://issues.apache.org/jira/browse/ARROW-638). Please see the [migration documentation](https://github.com/apache/arrow/issues/14542) for further details.*
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