Deploy Doxygen, take 2

Summary

!721 (merged) added deployment of the Doxygen documentation from the develop branch.

However the last step of the deployment (moving the un-tarred Doxygen from test/latest to test/Doxygen) because the number of files is too large. It returns the error :

/home/otbpush/bin/filter-commands.sh: line 8: /bin/mv: Argument list too long

(see this job)

It should be fixed with this MR

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
• Optionally, run git diff develop... -U0 --no-color | clang-format-diff.py -p1 -i on latest changes and commit