feat: refactor event parsing architecture and add Raydium Launchpad support

Major changes:
- Refactor event parsing system: migrate scattered logs_* modules to unified event_parser architecture
- Add unified UnifiedEvent trait and EventParser trait for standardized event parsing interface
- Introduce GenericEventParser and EventParserFactory for plugin-style protocol extension
- Add match_event! macro to simplify event type matching and handling
- Add Raydium Launchpad (Bonk.fun) protocol support:
  - Complete buy/sell trading functionality
  - Pool state management and querying
  - Event parsing and subscription
- Update trading system to support new protocol architecture
- Refactor constants organization, rename raydium to raydium_launchpad
- Update documentation and example code

Technical improvements:
- Unified event interface design for better code maintainability
- Factory pattern implementation for dynamic protocol loading
- Generic event parser to reduce code duplication
- Improved error handling and type safety

Breaking Changes:
- Remove old logs_* modules, use new event_parser system
- Protocol constants path change: raydium -> raydium_launchpad
- Event subscription API updated to unified interface

src/constants/raydium_launchpad/mod.rs

@@ -0,0 +1,46 @@
+//! Constants used by the crate.
+//!
+//! This module contains various constants used throughout the crate, including:
+//!
+//! - Seeds for deriving Program Derived Addresses (PDAs)
+//! - Program account addresses and public keys
+//!
+//! The constants are organized into submodules for better organization:
+//!
+//! - `seeds`: Contains seed values used for PDA derivation
+//! - `accounts`: Contains important program account addresses
+
+/// Constants used as seeds for deriving PDAs (Program Derived Addresses)
+pub mod seeds {
+    pub const POOL_SEED: &[u8] = b"pool";
+    pub const POOL_VAULT_SEED: &[u8] = b"pool_vault";
+}
+
+/// Constants related to program accounts and authorities
+pub mod accounts {
+    use solana_sdk::{pubkey, pubkey::Pubkey};
+
+    pub const AUTHORITY: Pubkey = pubkey!("WLHv2UAZm6z4KyaaELi5pjdbJh6RESMva1Rnn8pJVVh");
+    pub const GLOBAL_CONFIG: Pubkey = pubkey!("6s1xP3hpbAfFoNtUNF8mfHsjr2Bd97JxFJRWLbL6aHuX");
+    pub const PLATFORM_CONFIG: Pubkey = pubkey!("FfYek5vEz23cMkWsdJwG2oa6EphsvXSHrGpdALN4g6W1");
+    pub const TOKEN_PROGRAM: Pubkey = pubkey!("TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA");
+    pub const EVENT_AUTHORITY: Pubkey = pubkey!("2DPAtwB8L12vrMRExbLuyGnC7n2J5LNoZQSejeQGpwkr");
+    pub const WSOL_TOKEN_ACCOUNT: Pubkey = pubkey!("So11111111111111111111111111111111111111112");
+    pub const LAUNCHPAD_PROGRAM: Pubkey = pubkey!("LanMV9sAd7wArD4vJFi2qDdfnVhFxYSUg6eADduJ3uj");
+
+    pub const PLATFORM_FEE_RATE: u128 = 100; // 1%
+    pub const PROTOCOL_FEE_RATE: u128 = 25; // 0.25%
+    pub const SHARE_FEE_RATE: u128 = 0; // 0%
+}
+
+pub const BUY_EXECT_IN_DISCRIMINATOR: [u8; 8] = [250, 234, 13, 123, 213, 156, 19, 236];
+pub const SELL_EXECT_IN_DISCRIMINATOR: [u8; 8] = [149, 39, 222, 155, 211, 124, 152, 26];
+
+pub mod trade {
+    pub const TRADER_TIP_AMOUNT: u64 = 100000; // 0.0001 SOL in lamports
+    pub const DEFAULT_SLIPPAGE: u64 = 100; // 1%
+    pub const DEFAULT_COMPUTE_UNIT_LIMIT: u32 = 78000;
+    pub const DEFAULT_COMPUTE_UNIT_PRICE: u64 = 500000;
+    pub const DEFAULT_BUY_TIP_FEE: u64 = 600000; // 0.0006 SOL in lamports
+    pub const DEFAULT_SELL_TIP_FEE: u64 = 100000; // 0.0001 SOL in lamports
+}