Protects next.js proxy from unauthorized usage

[mohsinayoob]

Summary

Fixes #QF-1552

Protects next.js proxy from unauthorized usage. For integration or client side it checks for the origin of the request and for server side it checks signature for each request.
New ENV Vars:

• ALLOWED_ORIGINS=quran.com,test.quran.com
• PROXY_SIGNATURE_TOKEN=123456

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Test plan

This should state how this PR have been tested.

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules
• I have commented on my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

Screenshots or videos

Before	After
IMAGE HERE	IMAGE HERE

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
quran-com	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jan 15, 2025 11:28am

By mistake

[Mustafiz04]

Changes look good. Just to make sure nothing will break, have you tested thoroughly in local?