Quantity (RealwithUnit) unit converter using pint module

[hpohekar]

Source code - quantity.py
Test cases - test_quantity.py
Pint is added in install requirements in setup.py

RealWithUnits class is renamed to Quantity.

Description of unit names and symbol is available on following link -
https://github.com/hgrecco/pint/blob/master/pint/default_en.txt

Pint module documentation is available on following link -
https://pint.readthedocs.io/en/0.19/index.html

[seanpearsonuk]

@mkundu1 tests are failing in both @hpohekar and @prmukherj 's PR.

Running API codegen
Unable to find image 'ghcr.io/pyansys/pyfluent:latest' locally
latest: Pulling from pyansys/pyfluent
Digest: sha256:fd0fd01135e7b19e471990f5dbaf173ed11a8453bb0af301d7f0286bff48d5ca
Status: Downloaded newer image for ghcr.io/pyansys/pyfluent:latest
89795f6c0debabd55a3a5ae8af8b59073c03874db39d19006242adf0636d84bb
503253dc9983c5f259cdc870566ecc8a54a3baf9b0cc9ecc655efea33031bac5
Traceback (most recent call last):
File "/home/runner/work/pyfluent/pyfluent/codegen/allapigen.py", line 8, in
tuigen.generate()
File "/home/runner/work/pyfluent/pyfluent/codegen/tuigen.py", line 345, in generate
TUIGenerator(meshing=True).generate()
File "/home/runner/work/pyfluent/pyfluent/codegen/tuigen.py", line 313, in generate
info = PyMenu(self._service, self._main_menu.path).get_static_info()
File "/home/runner/work/pyfluent/pyfluent/src/ansys/fluent/core/services/datamodel_tui.py", line 216, in get_static_info
response = self._service.get_static_info(request)
File "/home/runner/work/pyfluent/pyfluent/src/ansys/fluent/core/services/error_handler.py", line 15, in func
raise RuntimeError(ex.details()) from None
RuntimeError
make: *** [Makefile:30: api-codegen] Error 1
Error: Process completed with exit code 2.

Laurence has posted new docker images.

[seanpearsonuk]

@hpohekar you can merge this now if you're ready

[hpohekar]

@hpohekar you can merge this now if you're ready

The c++ side unit conversion testing is not completed yet.