If an existing course doesn't already have the notes tab, enabling notes will not make it show up. This change fixes this by adding the tab in case it isn't already in the course.
* feat!: Add data model for course app API
The current course apps API makes individual queries to determine if a course app is enabled, which can be inefficient. With this change we now have a Django model that contains this information, allowing us to make bulk queries about all the course apps for a course in the API.
It also adds a new signal handler that initialises the status of all course apps in a course on course publish.
* Use celery tasks and a management commands to make cache async
* Review feedback
* update log messages
use separate celery task for each course task
Instead of hard-coding the "Learn More" and potentially other links for course
apps in the course authoring MFEs this change loads those URLs from the
django settings as part of each individual course app.
* docs: ADR for new course apps API
This ADR proposes a new course apps API that is driven by a new coruse app
plugin type.
* Updated based on feedback
* Major changes to document structure
* Review feedback
* feat: Course Apps API
This adds a new concept called course apps. These are exposed via a new
"openedx.course_app" entrypoint, which helps the LMS and studio discover such
apps and list them in a new rest api for the same.
These course apps will drive the pages and resources view in the course authoring
MFE. This system will track which apps are enabled and which are disabled. It
also allows third-party apps to be listed here by using the plugin entrypoint.
* Apply feedback from review
