refactor: unify transaction building and execution architecture

- Remove redundant transaction builder functions and merge into single build_transaction()
- Simplify compute budget manager with unified add_compute_budget_instructions()
- Consolidate trade executor interface by removing separate buy/sell methods
- Unify BuyParams/SellParams usage, remove *WithTipParams structs
- Streamline parallel execution logic and remove TradeType parameter
- Delete obsolete files: address_lookup.rs, tip_cache.rs
- Clean up nonce manager by removing unused is_using_nonce() function

This refactoring reduces code duplication and provides a cleaner, more maintainable API
for transaction building and execution across all trading protocols.

src/common/mod.rs

@@ -1,6 +1,5 @@
-pub mod address_lookup;
+// pub mod address_lookup;
 pub mod nonce_cache;
-pub mod tip_cache;
 pub mod types;
 pub mod address_lookup_cache;
 pub mod subscription_handle;