Resolve "[Queue-2.0] Exam: More visually display percentage covered"

What does this mr do?

Add a progress indicator to show the number of handled requests.

Screenshots

before

after

Does this MR meet the acceptance criteria?

• I have added a changelog entry to reflect the significant changes I made.
• Tests were created to test the feature.
• I have updated the documentation accordingly.
• I adhere to the style guide. Closes #413 (closed)