Summary

Modified parseTwapPriceFeedUpdates to properly handle multiple price feed IDs in a single call, allowing batch TWAP updates for multiple price feeds.

Rationale

• The original implementation only supported updating a single price feed (requiring exactly 2 updates)
• This change enables more efficient batch updates by allowing multiple price feed updates in a single transaction
• Reduces gas costs and improves UX by avoiding multiple separate transactions for different price feeds

How has this been tested?

• Current tests cover my changes
• Added new tests
• Manually tested the code

Testing details:

1. Added testParseTwapPriceFeedUpdatesMultipleFeeds() to verify:

   • Correct handling of multiple price feeds (2 feeds in test case)
   • Proper TWAP calculations for each feed
   • Correct validation of start/end times and price feed matching

2. Added testParseTwapPriceFeedUpdatesRevertsWithMismatchedArrayLengths() to verify:

   • Rejects when too many updates provided (4 updates for 1 price feed)
   • Rejects when too few updates provided (2 updates for 2 price feeds)
   • Ensures strict validation of update data length matching price feed count

3. Modified base test setup to include test data for multiple price feeds:

   • Extended base arrays to handle 2 price feeds
   • Added test data with different values to ensure distinct TWAP calculations

The changes maintain all existing functionality while adding support for batch updates, with comprehensive test coverage ensuring correctness and proper error handling.