[SSF 162] - Admin Donation Stats

[dburkhart07]

ℹ️ Issue

Closes #162

📝 Description

Made necessary backend adjustments to support frontend design:

• All pantry stats aggregation only works with approved pantries. Pending ones in theory should have no donation data related to them, but they should not be showing up in the stats anywhere
• Getting the names, and years of orders created for all the approved pantries. This is necessary for the filters, and we needed separate API calls for them since the pantryStats we are getting is constantly changing based on the filters, so we can't rely on that is our source of truth
• Adding tests for both of these

Frontend:

• Created design according to the Figma

✔️ Verification

• Ensured all tests passed, and endpoints still worked
• Verified design matched Figma
• Ensured query parameters were accurately being utilized for filter changes for efficient querying

🏕️ (Optional) Future Work / Notes

Did you notice anything ugly during the course of this ticket? Any bugs, design challenges, or unexpected behavior? Write it down so we can clean it up in a future ticket!