feat(credit): rupay credit card validation

[rrbharath]

Add validation for RuPay credit card

https://www.npci.org.in/product/rupay/card-variants

Addresses issue #2829

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

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (cca32d6) to head (d33d615).

Additional details and impacted files

@@            Coverage Diff            @@
##            master     #2830   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files          114       114           
  Lines         2600      2600           
  Branches       659       659           
=========================================
  Hits          2600      2600           

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[tux-tn]

The shared link does not provide sufficient details about the valid BIN ranges for RuPay. According to third-party BIN databases such as BINTable’s RuPay list, the current regex appears to omit several listed BINs and ranges, including 502801, the 606100-606984 interval, 607985-607999, 608000, 608501-608999, 627387, and 695047.

Could you please clarify the supported RuPay BIN ranges using an authoritative source? Alternatively, please update the regex and tests to include the missing BINs that are within the intended scope.