Build UI for overview graph of eCRs processed

[aathwal3]

🚧 What needs to be done

Create a graph that displays the number of eCRs ingested over time.

🤔 Why it needs to be done

Admins can have a quick view of how many eCRs were ingested each day(?) and see if the amount matches what they expect. (Need to confirm with Amrita that this is correct.)

🏗️ Acceptance Criteria

• Given I have successfully ingested eCRs
• When I view the admin dashboard
• Then I can see the amount of eCRs ingested per day plotted out on the graph (figma link)

⚙️ Technical Notes

📜 Additional context

None at this time