Add 90-day APY Component to Historical APY Calculation

[murderteeth]

Description

Currently, the APY calculation in packages/ingest/abis/yearn/lib/apy.ts computes weekly (7d), monthly (30d), and inception APY values. Adding a 90-day (quarterly) APY component would provide users with a more comprehensive view of vault performance over a medium-term timeframe.

Current Implementation

The system currently calculates:

• weeklyNet (7 days)
• monthlyNet (30 days)
• inceptionNet (since vault inception)

Proposed Enhancement

Add a new 90-day APY calculation that includes:

• quarterlyNet - 90-day annualized return
• quarterlyPricePerShare - Price per share 90 days ago
• quarterlyBlockNumber - Block number 90 days ago

Acceptance Criteria

• 90-day APY fields added to schema
• Calculation logic implemented and tested
• Output components properly stored in database
• GraphQL API exposes new quarterly fields
• Ensure proper handling when vault age < 90 days (return undefined)