test: add multiple new functions to test results

[imrn99]

• add f32/f64 support for tests
• add 4 additional integral to compute
• add a field to ComputeMethod::Boole to bypass method requirement (# of interval is a multiple of 4)

closes #23, #21

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 96.05263% with 6 lines in your changes missing coverage. Please review.

Project coverage is 91.71%. Comparing base (60cd608) to head (fdfc84f).

Files with missing lines	Patch %	Lines
integraal/src/tests/mod.rs	87.50%	4 Missing ⚠️
integraal/src/tests/function_b.rs	91.66%	2 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##            trunk      #35      +/-   ##
==========================================
+ Coverage   91.06%   91.71%   +0.65%     
==========================================
  Files           3        9       +6     
  Lines         459      483      +24     
==========================================
+ Hits          418      443      +25     
+ Misses         41       40       -1     

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