Get leaderboard stats endpoint

[Sebastian Thomas]

Description

Retrieves totalStamps, stampsLeft and prizesAchieved field when the endpoint /api/user/:upi is called for a user and replaces static values within /leaderboard

Proposed Solution

Acceptance Criteria

• Get request for endpoint /api/user/:upi
• Functions added to auto calculate totalStamps, stampsLeft and prizesAchieved within the User Schema
• Static values in /leaderboard page are replaced with these values once API is called

Notes

https://stackoverflow.com/questions/44044150/how-to-have-an-auto-calculated-attribute-in-mongoose-schema