Correctly find dependencies when installed

[jcortial-safran]

Use find_dependency instead of find_package in installed CMake config to correctly propagate QUIET and REQUIRED flags to users.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

❗ No coverage uploaded for pull request base (master@bae2c83). Click here to learn what that means.

Additional details and impacted files

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  Coverage          ?   43.98%           
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  Files             ?      179           
  Lines             ?    54124           
  Branches          ?    10252           
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  Hits              ?    23805           
  Misses            ?    22599           
  Partials          ?     7720           

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[Algiane]

Thanks!

[jcortial-safran]

The change had the unfortunate side-effect to make the CMake configuration fail whenever either SCOTCH or VTK are absent, even if these packages were not used when building Mmg. So it is a significant regression compared to the previous state.

Sorry for that, I should have tested more throughly. I will submit a fix as a new PR.

[Algiane]

Thanks for the feedback.

I haven't particularly tested the PR as the integration tests didn't fail but the config files generated by CMake are not tested 😅 .