Add TWAMM volume calculation to hourly_volume table

[mentatbot]

This implementation calculates TWAMM volume using the sale_rate * time_elapsed
formula for periods with constant sale rates, as requested in issue #7.

Key features:

• Tracks sale rate changes from twamm_sale_rate_deltas_materialized view
• Calculates volume for periods between consecutive rate changes
• Groups results by hour and token for hourly_volume_by_token table
• Subtracts TWAMM swap volume to avoid double counting as specified
• Handles both token0 and token1 sale rates properly

The calculation uses existing TWAMM infrastructure including virtual order
executions and sale rate delta tracking to provide accurate volume metrics.

Closes #7

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[mentatbot]

I've implemented the TWAMM volume calculation as requested in issue #7. Here's what the implementation does:

Overview

• Calculates TWAMM volume using sale_rate * time_elapsed for periods with constant sale rates
• Adds this volume to the existing hourly_volume_by_token table
• Subtracts TWAMM swap volume to avoid double counting

Algorithm

1. Track sale rate changes: Uses twamm_sale_rate_deltas_materialized to identify when sale rates change (order starts/ends)
2. Include virtual executions: Incorporates twamm_virtual_order_executions as baseline reset points
3. Calculate cumulative rates: Builds up cumulative sale rates for each time period
4. Hourly volume calculation: For each hour, calculates sale_rate * time_elapsed for active periods
5. Subtract TWAMM swaps: Removes direct swap volume where locker = TWAMM_ADDRESS to prevent double counting
6. Update volume table: Adds net TWAMM volume to hourly_volume_by_token

Key Features

• Handles both token0 and token1 sale rates properly
• Works with existing TWAMM infrastructure and materialized views
• Respects hourly boundaries for volume aggregation
• Prevents negative volumes with GREATEST(0, calculated - actual_swaps)

The implementation integrates into the existing refreshAnalyticalTables method and will run automatically as part of the regular analytical table refresh process.