feat: Add Raydium AMM V4 support and enhance protocol parsers

- Add complete Raydium AMM V4 protocol integration
- Enhance PumpFun, CLMM, CPMM event parsing
- Refactor parser architecture for better extensibility
- Update documentation and examples

src/streaming/event_parser/protocols/raydium_amm_v4/mod.rs

@@ -0,0 +1,5 @@
+pub mod events;
+pub mod parser;
+
+pub use events::*;
+pub use parser::RaydiumAmmV4EventParser;