feat: add course feedback comments

[ImJustChew]

Should probably integrate comments into our courses page, with a few key points

1. User must be logged in with NTHUAIS, verified to have taken the course, only can they comment
2. We need to determine what details are important for students, should we have just a comment box?
3. Do the students name need to be anonymous?

Any feedback would be appreciated, thanks!

[vercel[bot]]

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Name	Status	Preview	Updated (UTC)
courseweb	✅ Ready (Inspect)	Visit Preview	May 13, 2024 5:40pm

[sentry-io[bot]]

🔍 Existing Issues For Review

Your pull request is modifying functions with the following pre-existing issues:

📄 File: src/app/[lang]/(mods-pages)/courses/[courseId]/page.tsx

Function	Unhandled Issue
generateMetadata	TypeError: Cannot read properties of null (reading 'brief') generateMetadata(server/app/[lang]/(mods-pages)/courses/[courseId]/courseweb/src/app/[lang]/(mods-pages)/courses/[cour... Event Count: 730 Affected Users: 0
CourseDetailPage	TypeError: Cannot read properties of null (reading 'brief') CourseDetailPage(server/app/[lang]/(mods-pages)/courses/[courseId]/courseweb/src/app/[lang]/(mods-pages)/courses/[cour... Event Count: 47 Affected Users: 0

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