USD Amount for Total Amount Raised is Not Kept Track & Leading to Inaccurate to Raised USD Amount

[codingshot]

Problem

Since we are not keeping track of USD amount at the time of NEAR donations

User Story(s):

As a nonprofit, i want to know how much USD I rasied so i can acdurately know the value people donated in terms of USD for taxes
As a non profit, I want to know how much usd is currently in my trasurey so in case i didnt swap.

Description

Keep track of amount of USD and check for any icorrect amounts through an oracle on donation contract. Index this amount in total amount raised and possibly add hlper funciton

Acceptance Criteria

• add USD equivalent to donation struct
• can query this

Limitations

• need to change contract
• apis might be rate limited
• oracles might need external sdk

Resources

• Price oracles https://near.org/near/widget/ComponentDetailsPage?src=denysk.near/widget/PriceStats
• BOS Price oracle