Adding TaxId validation for Argentina

[estefrare]

Add tax id validations for Argentinian format. It includes validation for CUIT and CUIL.

It is based on:

• https://servicioscf.afip.gob.ar/publico/abc/ABCpaso2.aspx?id_nivel1=3036&id_nivel2=3040&p=Conceptos%20b%C3%A1sicos
• https://es.wikipedia.org/wiki/Clave_%C3%9Anica_de_Identificaci%C3%B3n_Tributaria

Checklist

• PR contains only changes related; no stray files, etc.
• README updated (where applicable)
• Tests written (where applicable)
• References provided in PR (where applicable)

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (9ba1735) 99.95% compared to head (5dd31c4) 99.95%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2224   +/-   ##
=======================================
  Coverage   99.95%   99.95%           
=======================================
  Files         107      107           
  Lines        2405     2417   +12     
  Branches      604      606    +2     
=======================================
+ Hits         2404     2416   +12     
  Partials        1        1           

Impacted Files	Coverage Δ
src/lib/isTaxID.js	100.00% <100.00%> (ø)

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[profnandaa]

LGTM, thanks for your contribution! 🎉