[Course Search] Trigger Course Search Modal in Course Authoring MFE

[bradenmacdonald]

"As a course author, I want to search for course content in the UI"

Figma designs

Requirements:

1. Add the 🔍 icon to the Studio header, and show it only if a new ENV variable / feature flag is enabled.
   
2. Clicking the 🔍 icon should open the search modal.
3. If the user is currently in a course context, the current course ID should be passed to the search modal. If the user is on the "home page" of the course authoring MFE or the taxonomy editor or some other place, no course ID should be passed to the search modal.
4. Write basic tests. Don't spend any time on tests that cover the search results/filters as those parts of the UI will change.

Notes:

• Use this prototype PR as a starting point. It contains some TypeScript that needs to be converted to JS though. Remove the keyboard shortcut for opening the modal (for now).
  
• For now, the filters and results and other content of the modal can be as shown ^ in the prototype; implementing the UX for those is in two separate stories.
• If necessary for dealing with development constraints, coverage requirements, etc. this can be kept as a feature branch until the UX is completed.

[rpenido]

Hi @bradenmacdonald! Should we implement this in a view completely contained in the Studio or use an iframe as we did for the ContentTagsDrawer?

[bradenmacdonald]

@rpenido This should be 100% in the Course Authoring MFE. When I said "Studio header", I meant the "Course Authoring MFE header".