feat: upgrade to v3.3.4 with improved error handling and transaction details

- Add TradeError struct with code, message, and instruction fields
- Enhance poll_transaction_confirmation to extract detailed error info from logs
- Change buy/sell return type from Option<anyhow::Error> to Option<TradeError>
- Add solana-transaction-status-client-types dependency
- Remove unused parallel.rs module

README.md

@@ -87,14 +87,14 @@ Add the dependency to your `Cargo.toml`:
 
 ```toml
 # Add to your Cargo.toml
-sol-trade-sdk = { path = "./sol-trade-sdk", version = "3.3.3" }
+sol-trade-sdk = { path = "./sol-trade-sdk", version = "3.3.4" }
 ```
 
 ### Use crates.io
 
 ```toml
 # Add to your Cargo.toml
-sol-trade-sdk = "3.3.3"
+sol-trade-sdk = "3.3.4"
 ```
 
 ## 🛠️ Usage Examples