feat(solana): add Jupiter v6 SwapsEvent aggregator swaps

[eekey-cloud]

Summary

• Add new Jupiter v6 aggregator swaps model using SwapsEvent decoder (SwapEventV2)
• Uses route calls (exact_out_route_v2, route_v2, shared_accounts_exact_out_route_v2, shared_accounts_route_v2) joined with instruction_calls to identify AMMs
• Extracts swap amounts from jupiter_evt_swapsevent using UNNEST on swap_events array
• Matches swaps to AMMs using rank ordering

Test plan

• CI tests pass for Jupiter v6 SwapsEvent model
• Verify data accuracy against on-chain transactions

[cursor]

PR Summary

Medium Risk
Adds new incremental swap attribution logic based on instruction ordering and JSON extraction, which could misattribute AMMs or amounts if event/call ordering assumptions change.

Overview
Adds a new jupiter_v6_solana source with route-call and SwapsEvent decoded tables, enabling dbt models to reference Jupiter v6 program decodes.

Introduces the incremental model jupiter_v6_solana_swapsevent_aggregator_swaps, which derives per-swap input/output amounts from jupiter_evt_swapsevent (unnesting swap_events) and joins them to AMM program IDs inferred from post-route instruction_calls using rank/row-number ordering; includes a uniqueness test over (month, tx, instruction indexes, amm, mints).

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