Resolve "Output time of otbcli applications in minutes, seconds instead of scientific notation"

Summary

Use human readable format for output time in otbcli applications. Closes #763 (closed)

Rationale

Issue #763 (closed)

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