Validator Feature - DateTime and Date Parameters Checked on Decimals Tag

[janstaelensskyline]

The datetime and date parameters have the <decimals>8</decimals> tag in both Interprete and Display. For parameters of type time, the decimals tag is not required. As described here:

In addition: if the parameter is included in a table, also check that the headerSum feature is disabled.

Please see the Kata exercise tutorial as a 'kick-off' for this one:
https://docs.dataminer.services/develop/TOOLS/DIS/Tutorials/DisValidatorContribution.html

This exercise does not add all the necessary logic.

If this feature is developed, merged, and released, the assignee will be granted 750 DevOps points.
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