feat: add check_product_voucher function

[Lucino772]

No description provided.

[codecov-commenter]

Codecov Report

Merging #29 (c7f92aa) into main (564a212) will increase coverage by 0.54%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #29      +/-   ##
==========================================
+ Coverage   47.56%   48.10%   +0.54%     
==========================================
  Files          29       29              
  Lines         944      952       +8     
  Branches      119      121       +2     
==========================================
+ Hits          449      458       +9     
  Misses        480      480              
+ Partials       15       14       -1     

Impacted Files	Coverage Δ
mojang/api/session.py	91.54% <100.00%> (+0.92%)	⬆️
mojang/api/urls.py	100.00% <100.00%> (ø)
mojang/api/helpers.py	93.10% <0.00%> (+3.44%)	⬆️

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