Hypserspectral image processing recipe

Summary

This merge request adds a new recipe for hyperspectral image processing.

Rationale

OTB has algorithms and applications for hyperspectral image processing, but there is no associated recipe in the Cookbook (issue #1851 (closed)) . This recipe has two parts, one for hyperspectral unmixing and one for anomaly detection.

Copyright

The copyright owner is CNES and has signed the ORFEO ToolBox Contributor License Agreement.

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Check before merging:

• All discussions are resolved
• At least 2 votes from core developers, no vote.
• The feature branch is (reasonably) up-to-date with the base branch
• Dashboard is green
• Copyright owner has signed the ORFEO ToolBox Contributor License Agreement