209 use ospsuite utils

[pchelle]

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[pchelle]

About the use of :: and the difference between Namespace and Imports, I found this: https://r-pkgs.org/namespace.html#imports interesting

From what I understand, the use of :: is especially advised when there is a chance that the function or object name is not unique or was updated by another package (e.g. base::sample vs dplyr::sample).
Since one of the goals of {ospsuite.utils} is to prevent that by centralizing the code, I think it is okay not to specify ospsuite.utils:: in most cases.