Add SafeDivBig function

[fmoletta]

Same behaviour as https://github.com/lambdaclass/cairo-vm/blob/8d711e136d4ad590249975f0b750502c44b8177b/vm/src/math_utils/mod.rs#L60

[codecov-commenter]

Codecov Report

Merging #292 (8dbdbcb) into main (a72704d) will increase coverage by 0.06%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #292      +/-   ##
==========================================
+ Coverage   57.60%   57.66%   +0.06%     
==========================================
  Files          45       45              
  Lines        5611     5620       +9     
==========================================
+ Hits         3232     3241       +9     
  Misses       2078     2078              
  Partials      301      301              

Files	Coverage Δ
pkg/utils/math_utils.go	21.42% <100.00%> (+21.42%)	⬆️

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