Add new mode to FakeSeriesSource

This MR adds two new modes of operation to FakeSeriesSource:

• 'const_int' or 'constant_int': provides a source pad with a constant stream of integers, as specified by the user
• 'const_float or 'constant_float': provides a source pad with a constant stream of floats, as specified by the user

Unit tests for each of these modes have been added as well.

These two modes are useful for testing various calibration-related elements in order to mimic things like front-end oscillator channels or front-end state vector channels.

I wonder if we actually need two new parameters, both const_int and const_float. What if we just had one new parameter, const, and just used the data type of the provided value as the type of the data from the source. I think we could convince mypy to accept both int and float for the value of the const argument.

Thanks @madeline-wade I will let @yun-jing.huang chime in, but I am good with this as long as it maintains test coverage and all checks in "make" pass.

I think @jameson.rollins's suggestion makes sense. The rest looks fine to me.

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• 11c087e4 - Updating unit test to combine const int and float source

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• 57cbdc21 - Fixing typing for mypy

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I incorporated Jamie's suggestion, updated the test and have fixed the formatting issues with mypy. Is there anything else that should be addressed before this is merged?

approved this merge request

merged

mentioned in commit ab8cf38d