Add Modelica measure base classes

[nllong]

This PR adds three new base classes for creating Modelica-based measures. A measure must inherit from the MeasureBase in order to correctly run the measures on the model. These types of measures only (currently) work on a ModelicaProject-based approach due to the need to know the path to the project.

A measure can be written and then executed with a block of code such as

# configure and run the measures
measure = SetExtendedTypeArgumentValue('distribution_pump_flow_nominal')
args = measure.arguments()
args.set_value('model_name', 'Districts/district')
args.set_value('extended_type', 'Buildings.Experimental.DHC.Examples.Combined.BaseClasses.PartialSeries')
args.set_value('type', 'Buildings.Experimental.DHC.Loads.Combined.BuildingTimeSeriesWithETS')
args.set_value('identifier', 'bui')
args.set_value('object_name', 'datDes')
args.set_value('argument_name', 'mPumDis_flow_nominal')
args.set_value('value', 180, True)
measure.run(project, args)

TODOs

• unit tests
• example measures
• handle non-project based measures?

[github-actions]

Pull Request Test Coverage Report for Build 6936122550

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 93.457%

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Totals
Change from base Build 6936100847:	0.0%
Covered Lines:	1757
Relevant Lines:	1880

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[github-actions]

Pull Request Test Coverage Report for Build 7416556320

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.004%) to 93.538%

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Totals
Change from base Build 7413582147:	-0.004%
Covered Lines:	1766
Relevant Lines:	1888

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💛 - Coveralls

[github-actions]

Pull Request Test Coverage Report for Build 7434250990

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 93.542%

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Totals
Change from base Build 7426984529:	0.0%
Covered Lines:	1767
Relevant Lines:	1889

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💛 - Coveralls