Add another chart to display time code statistics

[CompSciLauren]

Is your feature request related to a problem? Please describe.
It might be interesting to the user if they could have a nice visual of how much time they spent on various time codes throughout the week. There is already a weekly summary showing the time code data, but having a visual graph or chart to show similar information would be a nice-to-have.

Describe the solution you'd like
Add some kind of bar chart or graph of some sort that shows users how much time they spent on each time code for the week. It would go below the weekly summary on the statistics page.