feat(lang): Add Bengali (bn) translations

[themaruf]

Description

Add completed translations for Bengali language.

Specific Changes proposed

New file of Bengali (bn.json) language strings.

Requirements Checklist

• Feature implemented / Bug fixed
• If necessary, more likely in a feature request than a bug fix
  • Change has been verified in an actual browser (Chrome, Firefox, IE)
  • Unit Tests updated or fixed
  • Docs/guides updated
  • Example created (starter template on JSBin)
• Reviewed by Two Core Contributors

[welcome]

💖 Thanks for opening this pull request! 💖

Things that will help get your PR across the finish line:

• Run npm run lint -- --errors locally to catch formatting errors earlier.
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[mister-ben]

See comments about the replacement tokens, otherise looks good.

[codecov]

Codecov Report

Merging #7823 (16a6122) into main (b22a08a) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #7823   +/-   ##
=======================================
  Coverage   80.93%   80.93%           
=======================================
  Files         116      116           
  Lines        7463     7463           
  Branches     1813     1813           
=======================================
  Hits         6040     6040           
  Misses       1423     1423           

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[misteroneill]

LGTM, thank you for the PR!

[welcome]

Congrats on merging your first pull request! 🎉🎉🎉