feat: Configure angle as dimension

[hpohekar]

closes #307,

1. Configure ANGLE and SOLID_ANGLE as dimension using PYANSYS_UNITS_ANGLE_AS_DIMENSION env var

Dimensions without angle

>>> import ansys.units as pyunits
>>> degree = pyunits.Quantity(1.0, "degree")
>>> degree.is_dimensionless
True
>>> degree + 1
Quantity (58.29577951308232, "degree")
>>>

------------------------------------------------------------------------------

>>> radian = pyunits.Quantity(1.0, "radian")
>>> radian.is_dimensionless
True
>>> (radian + 1).to("degree")
Quantity (114.59155902616465, "degree")
>>>

Dimension with angle - set env var PYANSYS_UNITS_ANGLE_AS_DIMENSION

>>> import os
>>> os.environ["PYANSYS_UNITS_ANGLE_AS_DIMENSION"] = "1"
>>> import ansys.units as pyunits
>>> degree = pyunits.Quantity(1.0, "degree")
>>> degree.is_dimensionless
False
>>> degree + 1
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "D:\Repos\pyansys-units\src\ansys\units\quantity.py", line 378, in __add__
    return self._relative_unit_check(__value)
  File "D:\Repos\pyansys-units\src\ansys\units\quantity.py", line 280, in _relative_unit_check
    new_units, other_units = op(self.units, __value.units) or (
  File "D:\Repos\pyansys-units\src\ansys\units\unit.py", line 289, in __add__
    return self._temp_precheck(__value)
  File "D:\Repos\pyansys-units\src\ansys\units\unit.py", line 231, in _temp_precheck
    raise IncorrectUnits(self, other_unit)
ansys.units.unit.IncorrectUnits: 'radian' and '' must match for this operation.
>>>

>>> radian = pyunits.Quantity(1.0, "radian")
>>> radian.is_dimensionless
False
>>> radian + 1
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "D:\Repos\pyansys-units\src\ansys\units\quantity.py", line 378, in __add__
    return self._relative_unit_check(__value)
  File "D:\Repos\pyansys-units\src\ansys\units\quantity.py", line 280, in _relative_unit_check
    new_units, other_units = op(self.units, __value.units) or (
  File "D:\Repos\pyansys-units\src\ansys\units\unit.py", line 289, in __add__
    return self._temp_precheck(__value)
  File "D:\Repos\pyansys-units\src\ansys\units\unit.py", line 231, in _temp_precheck
    raise IncorrectUnits(self, other_unit)
ansys.units.unit.IncorrectUnits: 'radian' and '' must match for this operation.
>>>

[seanpearsonuk]

I think this needs to be discussed and completely reworked.

[seanpearsonuk]

@hpohekar Please could you create a separate pull request for the other changes?

[hpohekar]

@hpohekar Please could you create a separate pull request for the other changes?

@seanpearsonuk Done. #313

[seanpearsonuk]

The tests look good so I will approve at this point, thanks.

[hpohekar]

The tests look good so I will approve at this point, thanks.

We are going to add some more tests, then we will merge this PR. Thank you.