ENH: Wrap ComposeImageFilter for complex types

[vicory]

This allows for combining real and imaginary images into complex images.

Closes #1581

PR Checklist

• 🚫 Makes breaking changes
• 🚫 Makes design changes
• 🚫 Adds the License notice to new files.
• Adds Python wrapping.
• 🚫 Adds tests and baseline comparison (quantitative).
• 🚫 Adds test data.
• 🚫 Adds Examples to ITKExamples
• 🚫 Adds Documentation.

Refer to the ITK Software Guide for
further development details if necessary.

[thewtex]

Thanks @vicory !

Test failures are unrelated.