[python_basic_memory] Add first memory correctness check

[KowalskiThomas]

What is this?

This is our first Memory Profiling correctness check for Python! 🚀

The goal is both to validate that what we report is correct and that the Memory Profiling feature continues to work over time – which we've been somewhat blind to lately.

Questions

The numbers don't make sense to me. Here is a profile I captured, I think the memory should be roughly ~75% and ~25% (since I allocate bytearray(1024) on one side and bytearray(3 * 1024) on the other) but for some reason we're getting 60% and 40% which sounds more like bytearray(2 * 1024) for the second allocation.
One possible explanation is that the bytearray overhead might be significant enough to bias the numbers but that would be sort of huge. According to my research, the PyObject overhead should be roughly 60 bytes, so far from enough to explain skewing the results so much...