feat(i18n): add Hindi (hi-IN) language support

[adityagupta0251]

Purpose

Add Hindi (hi-IN) language support to the @asgardeo/i18n package for better accessibility for Hindi-speaking users.

Related Issues

• Fixes chore: add हिन्दी - hi-IN language support #163

Related PRs

• None

Checklist

• e2e cypress tests locally verified.
• Manual test round performed and verified.
• UX/UI review done on the final implementation.
• Documentation provided. (Add links if there are any)
• Unit tests provided. (Add links if there are any)
• Integration tests provided. (Add links if there are any)

Security checks

• Followed secure coding standards in http://wso2.com/technical-reports/wso2-secure-engineering-guidelines?
• Ran FindSecurityBugs plugin and verified report?
• Confirmed that this PR doesn't commit any keys, passwords, tokens, usernames, or other secrets?

[adityagupta0251]

@brionmario check if now?

[adityagupta0251]

@brionmario Sorry sir For this long trouble 🥹🥲
🙌 Thanks for some appreciation..

[brionmario]

@brionmario check if now?

There was an additional line break, i fixed it with: ecf7e5f

Otherwise, LGTM.

Hope you have verified the translated content manually to make sure it's accurate :)

BTW, the PR template still looks different. We usually don't change the PR templates.
Can you bring it in to the following format so I can merge the PR?
Here's a reference: #147 (comment)

Also link your issue (#163) in the related Issues.

### Purpose
<!-- Describe the problem, feature, improvement or the change introduces by the PR briefly. Add screenshots/GIFs if UI/UX changes are introduced. -->

### Related Issues
- 

### Related PRs
- 

### Checklist
- [ ] e2e cypress tests locally verified.
- [ ] Manual test round performed and verified.
- [ ] UX/UI review done on the final implementation.
- [ ] Documentation provided. (Add links if there are any)
- [ ] Unit tests provided. (Add links if there are any)
- [ ] Integration tests provided. (Add links if there are any)

### Security checks
- [ ] Followed secure coding standards in http://wso2.com/technical-reports/wso2-secure-engineering-guidelines?
- [ ] Ran FindSecurityBugs plugin and verified report?

- [ ] Confirmed that this PR doesn't commit any keys, passwords, tokens, usernames, or other secrets?

[adityagupta0251]

Now done ✅
Thanks sir..
It would be my First Open source Contribution in my whole little coding journey..
Thanks a lot..❤️

[brionmario]

Now done ✅

Merged!

Thanks a lot for the contribution 🤝