Feature: API to pull fees paid by an address

[minxylynx]

Summary

Add an API to display fees paid by an address by month.

Problem Definition

Users would like to see fee expenditure from an account. Should be broken down by month.

Proposal

• Add DB view for feepayer data by month
• Add API to return the feepayer data per address

Stretch goals

• Add DB view to show users of grants/feepaying capabilities for the given feepayer address
• Add API to return map of data from above view

---

For Admin Use

• Not duplicate issue
• Appropriate labels applied
• Appropriate contributors tagged
• Contributor assigned/self-assigned