feat(isPancard): added validation for indian government document Pan card

[rahulnikam2002]

feat(Pan card validation): added validation for Pan card

Why Pan card validation

This government document is widely used in India, and many websites take the PAN card for verification.

resources

1. https://incometaxindia.gov.in/Pages/tax-services/apply-for-pan.aspx
2. https://www.bankbazaar.com/pan-card/uses-of-pan-card.html#:~:text=A%20PAN%20card%20is%20necessary,savings%20or%20a%20current%20account.

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 (b958bd7) 99.95% compared to head (c3a8dd7) 99.95%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2289   +/-   ##
=======================================
  Coverage   99.95%   99.95%           
=======================================
  Files         107      108    +1     
  Lines        2454     2462    +8     
  Branches      619      620    +1     
=======================================
+ Hits         2453     2461    +8     
  Partials        1        1           

Files Changed	Coverage Δ
src/index.js	100.00% <100.00%> (ø)
src/lib/isPancard.js	100.00% <100.00%> (ø)

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