Feature: Add basic FAQ functionality

[FelberMartin]

Problem Description

The Android app did not yet support the FAQ feature provided by the Webapp and iOS.

Changes

• Added faq and faq-test feature modules
• Added Overview and Detail screen
• Show faq BottomNavItem if faq is enabled for that course
• Introduced FaqRepository that will further be used to hide the logic of remote and local storage (will be added in FAQ: Support offline storage of faqs #400 )
• Added UI tests

Steps for testing

On "TS2 > Test Course Martin Felber" I enabled FAQs and created some sample FAQs.

• Go to a course with FAQ enabled
• See that BottomNavItem is displayed
• Browse through FAQs and ensure everthing works as intented

Screenshots

Overview:

Details:

Follow-ups

See sub-issues of #90

[julian-wls]

On "TS2 > Test Course Martin Felber" I enabled FAQs and created some sample FAQs.

Are you sure it's TS2? I just went there, but there was no FAQ enabled. I also checked the web app.

[julian-wls]

Overall really nice, I didn't experience any issues while testing.
I tested on TS2 using Practical Course: Interactive Learning SS24.

Just two concerns regarding changes that have been made on other branches. I don't know, which PR gets merged first, but I wanted to point it out here so that the other PR which gets merged second can make include the changes before.
The rest of the code seems fine :)

[FelberMartin]

Are you sure it's TS2? I just went there, but there was no FAQ enabled. I also checked the web app.

Okay thats weird. I really dont know why it got disabled again 🧐. Anyways, I re-enabled faqs on that "TS2 > Test Course Martin Felber" again and testing should work

[julian-wls]

Awesome, everything works as expected. Images get rendered correctly, tested on TS2 in your test course.
Code lgtm. Can be merged!

If you want to merge this first, I can go ahead and include the ArtemisSearchTopAppBar in #407 or vice versa :)