Feature/add country benin

[rksp25]

Added regex for Benin fr-BJ

Checklist

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

[rksp25]

@profnandaa Can you please review this PR!!

[rubiin]

Looks like you have to fix merge conflicts before we can merge

[codecov]

Codecov Report

Merging #1997 (625603d) into master (518a663) will not change coverage.
The diff coverage is n/a.

❗ Current head 625603d differs from pull request most recent head 4096915. Consider uploading reports for the commit 4096915 to get more accurate results

@@            Coverage Diff            @@
##            master     #1997   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          104       104           
  Lines         2120      2108   -12     
  Branches       475       475           
=========================================
- Hits          2120      2108   -12     

Impacted Files	Coverage Δ
src/lib/isMobilePhone.js	100.00% <ø> (ø)
src/lib/isIP.js	100.00% <0.00%> (ø)
src/lib/isLength.js	100.00% <0.00%> (ø)
src/lib/isLicensePlate.js	100.00% <0.00%> (ø)

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[rksp25]

@rubiin conflict fixed please review

[rksp25]

Looks like you have to fix merge conflicts before we can merge

@rubiin conflict fixed please review

[rubiin]

@rksp25 still says conflict. Rest is ok

[rubiin]

Thankyou for the contribution 🎉