Get rid of FunctionType.parameterCount.

[dabrahams]

I will proceed with documentation and any necessary tests if we believe this is worth the added complexity.

[codecov]

Codecov Report

❌ Patch coverage is 77.08333% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 84.69%. Comparing base (20e6fa3) to head (4ee2448).

Files with missing lines	Patch %	Lines
...urces/SwiftyLLVM/Utils/MutableValueSemantics.swift	20.00%	8 Missing ⚠️
Sources/SwiftyLLVM/Types/FunctionType.swift	92.59%	2 Missing ⚠️
Sources/SwiftyLLVM/Module.swift	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #142      +/-   ##
==========================================
- Coverage   84.96%   84.69%   -0.28%     
==========================================
  Files          57       59       +2     
  Lines        1417     1457      +40     
==========================================
+ Hits         1204     1234      +30     
- Misses        213      223      +10     

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[tothambrus11]

Thanks for the work! I think my version is simpler - we don't need to actually read the whole array, as we can query individual elements through the C++ API: #141
I'd like to avoid shared mutable and lazy properties if possible (the latter mostly because Swift compiler is quite buggy around them and often caused compiler crashes)

[dabrahams]

Yours is much better; I couldn't find the function that just gets one parameter or I wouldn't have done all that. Mine doesn't use any lazy properties.

Make yours RandomAccess though

[tothambrus11]

Oh wow, it was so late yesterday that I somehow misread lazyStorage as being a lazy property...