feat: Add Raydium AMM V4 support and middleware system

- Add Raydium AMM V4 trading protocol support
- Implement instruction middleware system for dynamic processing
- Refactor trade executors to support middleware parameters
- Add fee calculation and slippage protection mechanisms
- Maintain backward compatibility with optional middleware

src/trading/core/traits.rs

@@ -1,21 +1,25 @@
+use std::sync::Arc;
+
 use anyhow::Result;
 use solana_sdk::instruction::Instruction;
+use crate::trading::MiddlewareManager;
+
 use super::params::{BuyParams, BuyWithTipParams, SellParams, SellWithTipParams};
 
 /// 交易执行器trait - 定义了所有交易协议都需要实现的核心方法
 #[async_trait::async_trait]
 pub trait TradeExecutor: Send + Sync {
     /// 执行买入交易
-    async fn buy(&self, params: BuyParams) -> Result<()>;
+    async fn buy(&self, params: BuyParams, middleware_manager: Option<Arc<MiddlewareManager>>) -> Result<()>;
 
     /// 使用MEV服务执行买入交易
-    async fn buy_with_tip(&self, params: BuyWithTipParams) -> Result<()>;
+    async fn buy_with_tip(&self, params: BuyWithTipParams, middleware_manager: Option<Arc<MiddlewareManager>>) -> Result<()>;
 
     /// 执行卖出交易
-    async fn sell(&self, params: SellParams) -> Result<()>;
+    async fn sell(&self, params: SellParams, middleware_manager: Option<Arc<MiddlewareManager>>) -> Result<()>;
 
     /// 使用MEV服务执行卖出交易
-    async fn sell_with_tip(&self, params: SellWithTipParams) -> Result<()>;
+    async fn sell_with_tip(&self, params: SellWithTipParams, middleware_manager: Option<Arc<MiddlewareManager>>) -> Result<()>;
 
     /// 获取协议名称
     fn protocol_name(&self) -> &'static str;