Incorrect CGPA due to missing feedback.

[Ganesh-RB]

Describe the bug
The current version of the GPA calculator is encountering an issue where it fails to account for courses that have missing feedback. This leads to inaccurate GPA calculations, as these courses are not considered in the final grade calculation.

Possible Solution

1. Showing the grades of the courses with missing feedback.
   • AIMS backend provides the API for searching the courses with the given grades.
   • With the help of content_script, we can run the script on the user visiting the view courses page.
   • Where we can search courses with all possible grades and add the missing grades in the UI.
   • GPA calculator will use the added grade to calculate the correct GPA.