[Feature] Switch to stacked chart

[markbotterill]

Reviewer: @sidravi1 @lickem22
Estimate: 1 hour

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Ticket

Fixes: JIRA_TICKET_LINK

Description

Fixes existing line chart bug where queries weren't showing up correctly + replaced the line chart with a swishy bar chart instead.

Goal

Address UI feedback on the dashboard + fix minor bug.

Changes

1. Fix the bug in the backend: Only queries that had feedback assigned were being considered in the pre-existing line chart. Changed the filtering logic to that all queries were considered appropriately.
2. Changed schema in the backend to accommodate the overlap of "urgent" and "downvoted"
3. Created queries to capture data for all 4 categories
4. Created a new parsing function on the frontend to read the TS data in appropriately
5. Replaced the existing LineChart with a StackedChart instead

Future Tasks (optional)

How has this been tested?

All tests still pass + front-end works seamlessly. However, I think a full overhaul of the test_dashboard_overview.py is still needed.

To-do before merge (optional)

Fix tests

Checklist

Fill with x for completed.

• My code follows the style guidelines of this project
• I have reviewed my own code to ensure good quality
• I have tested the functionality of my code to ensure it works as intended
• I have resolved merge conflicts

(Delete any items below that are not relevant)

• I have updated the automated tests
• I have updated the scripts in scripts/
• I have updated the requirements
• I have updated the README file
• I have updated affected documentation
• I have added a blogpost in Latest Updates
• I have updated the CI/CD scripts in .github/workflows/
• I have updated the Terraform code

[lickem22]

Thank you very much @markbotterill , Looks good overall I added a couple of comments regarding the code.
Regarding the dashboard a couple of things:

1. The 4th Barchart always have a different shade of green.

2. For the Year barchart, could you get a monthly barchart instead of biweekly?

3) For the weekly barchart, I think it would be nice to add day of week as well. To make it readable. Please let me know when you make the changes and add the tests so I can approve.