REFAC: include-what-you-use in Modules/Core/

Summary

Fix includes in Modules/Core.

Rationale

See issue #1635 (closed).

Implementation Details

Additional notes

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