Add CORS helper

[njfamirm]

Description

Add CORS helper

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/AliMD/alwatr/blob/main/CONTRIBUTING.md#commit-message-format
• All methods have proper description in jsdocs format with @example section.
• Docs have been added / updated (for bug fixes / features).
• I have performed a self-review of my own code.

[njfamirm]

ok?

[njfamirm]

این کار میکنه
اما شاختار app.use خیلی بهتره
کلا ریفکتور میکنم

[njfamirm]

https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS/Errors/CORSMultipleAllowOriginNotAllowed

[njfamirm]

ok? @alimd

[njfamirm]

@alimd الان دیگه میتونم روی این کار کنم
اگه موردی داره بگین لطفا

[alimd]

اینو یاداوری کن باید باهم بنویسیم

[github-actions]

Pull Request closed and locked due to lack of activity.
If you'd like to build on this closed PR, you can clone it using this method: https://stackoverflow.com/a/14969986
Then open a new PR, referencing this closed PR in your message.