feat: display snapshot of aggregated task completion data

[audreypho]

Description

Displays a snapshot of task completion data for each unit aggregated at a tutorial level by task and status

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

N/A

Testing Checklist:

• Tested in latest Chrome
• Tested in latest Safari
• Tested in latest Firefox

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have requested a review from @macite and @jakerenzella on the Pull Request

[b0ink]

Front end is looking really good, just a few points on improving type safety and code readability