Scalars should compare equal if the underlying quantity measure is OK

[nicoddemus]

I think Scalar(1, "m") should compare equal to Scalar(100, "cm"). This would allow us to write more natural code like:

if current_tubing_end <= current_open_hole_position:

Instead of being forced to write:

if current_tubing_end.GetValue('m') <= current_open_hole_position.GetValue('m'):

pint works this way:

>>> import pint
>>> ureg = pint.UnitRegistry()
>>> 1* ureg.meter == 100 * ureg.centimeter
True

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From this discussion: https://eden.esss.com.br/stash/projects/ESSS/repos/alfasim/pull-requests/1690/overview?commentId=120265

[nicoddemus]

Another annoying side-effect:

>>> {Scalar(1,'m'), Scalar(100, 'cm')}
{Scalar(1.0, 'm', 'length'), Scalar(100.0, 'cm', 'length')}

This should have returned:

>>> {Scalar(1,'m'), Scalar(100, 'cm')}
{Scalar(1.0, 'm', 'length')}

[prusse-martin]

and

>>> {Scalar(100, 'cm'), Scalar(1,'m')}
{Scalar(100.0, 'cm', 'length')}
>>> {Scalar(100.0, 'cm', 'length')} == {Scalar(1.0, 'm', 'length')}
True

?

This will make the scalar hash being a bit slower.