Improve inspect/toString number formatter

[Dimava]

There was a corner case in inspect breaking the proper tabulation,
so I chose to rewrite the whole number formatter in a way I would like to see it to work.

[codecov]

Codecov Report

Base: 66.67% // Head: 66.80% // Increases project coverage by +0.12% 🎉

Coverage data is based on head (a8e3bcd) compared to base (4b8e9b7).
Patch coverage: 100.00% of modified lines in pull request are covered.

❗ Current head a8e3bcd differs from pull request most recent head 3a621e7. Consider uploading reports for the commit 3a621e7 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #157      +/-   ##
==========================================
+ Coverage   66.67%   66.80%   +0.12%     
==========================================
  Files          32       32              
  Lines        3232     3241       +9     
  Branches      514      520       +6     
==========================================
+ Hits         2155     2165      +10     
+ Misses        997      996       -1     
  Partials       80       80              

Impacted Files	Coverage Δ
src/inspect.js	100.00% <100.00%> (+3.03%)	⬆️

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[targos]

thank you!