fix the endpoint for getting folders of course

[harsimran-d]

PR Fixes:

• 1 Make the logic to check if the user has bought a course same as the request that fetches all courses at /courses
• 2 Make the logic to retrieve all folders by courses and match the id there and not match with the content id

Checklist before requesting a review

• I have performed a self-review of my code
• I assure there is no similar/duplicate pull request regarding same issue

[harsimran-d]

Hi @devsargam I think i have found the issue for one of the endpoint
could you please review and see if it works.
thanks

[devsargam]

hey thanks for raising the pr

[devsargam]

if you have some time please refer to appx.ts file there you will find the logic of doing it

[devsargam]

ref: https://github.com/code100x/cms/blob/main/src/utiles/appx.ts