feat(isAlpha, isAlphanumeric): add support for Indic locales (ta-IN, te-IN, kn-IN, ml-IN, gu-IN, pa-IN, or-IN)

[avadootharajesh]

This commit introduces Indic language support into isAlpha and isAlphanumeric methods.

Languages added:

• Tamil (ta-IN) | Reference Character Set
• Telugu (te-IN) | Reference Character Set
• Kannada (kn-IN) | Reference Character Set
• Malayalam (ml-IN) | Reference Character Set
• Gujarati (gu-IN) | Reference Character Set
• Punjabi (pa-IN) | Reference Character Set
• Odia (or-IN) | Reference Character Set

Test Result

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 (72573b3) to head (c458883).

Additional details and impacted files

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##            master     #2576   +/-   ##
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  Coverage   100.00%   100.00%           
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  Files          114       114           
  Lines         2535      2539    +4     
  Branches       641       641           
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+ Hits          2535      2539    +4     

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[avadootharajesh]

Hey reviewer!

• Added support for Indian languages 🎉
• Added basic support for Indian languages in the validator.
• Tested a few cases, things look good. Open to feedback!

let me know If I have to do anything else...

[Copilot]

Pull Request Overview

This PR adds support for seven Indic languages (Tamil, Telugu, Kannada, Malayalam, Gujarati, Punjabi, and Odia) to the isAlpha and isAlphanumeric validator functions. The implementation includes Unicode character ranges for each language, appropriate decimal handling, and comprehensive test coverage.

• Adds Unicode regex patterns for seven Indic locales covering their respective character ranges
• Updates decimal and comma decimal configurations for the new locales
• Provides comprehensive test coverage with valid and invalid test cases for each language

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
src/lib/alpha.js	Adds Unicode regex patterns for Indic languages and updates decimal configurations
test/validators.test.js	Adds comprehensive test cases for all seven new Indic language validators
README.md	Updates documentation to include the new supported locales in isAlpha and isAlphanumeric descriptions

Comments suppressed due to low confidence (1)

test/validators.test.js:1988

• The Bengali (bn-IN) locale is being tested but was not mentioned in the PR title or description as one of the new Indic locales being added. This test appears to be for an existing locale rather than a newly added one.

  it('should validate Bengali alpha strings', () => {

[avadootharajesh]

Are there any other issues?
Cuz bengali test was added by someone else, hence I have mentioned what I have done
As it ( bengali ) is existing, I did not take a step to change it Or fakely add it to my pr
@Copilot @rubiin