sinon: add support for sinon.assert

[kristerkari]

Attempts to implement most of the sinon.assert matchers in the sinon codemod.

If you have any idea of how to implement more of the sinon.assert matchers, please let me know. Also, the switch statement that I used is not the prettiest one, but at least it is relatively easy to read (suggestions welcome there too).

I used these as documentation for how sinon.assert is used:

• https://sinonjs.org/releases/latest/assertions/
• https://github.com/search?p=1&q=sinon.assert&type=Code

ping @skovhus

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.09 🎉

Comparison is base (a94e2b5) 92.38% compared to head (ecd7076) 92.47%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #518      +/-   ##
==========================================
+ Coverage   92.38%   92.47%   +0.09%     
==========================================
  Files          26       26              
  Lines        1944     1968      +24     
  Branches      405      407       +2     
==========================================
+ Hits         1796     1820      +24     
  Misses        102      102              
  Partials       46       46              

Impacted Files	Coverage Δ
src/transformers/sinon.ts	91.47% <100.00%> (+0.72%)	⬆️

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[skovhus]

Thanks!