feat: Add caching system and performance optimizations

- Add fast_fn module with global caches for PDA, ATA, and instruction operations
- Implement memory-efficient caches using CLRU and parking_lot for thread-safe access
- Optimize compute budget instruction generation with caching
- Replace std::sync::Mutex with parking_lot::Mutex for better performance
- Add dedicated caching for PumpFun PDAs and associated token addresses
- Improve transaction building with batch signature optimization
- Add new dependencies: clru, smallvec, parking_lot for cache infrastructure
- Remove unused utility functions in pumpfun module
- Enhance error messages for tip fee configuration validation

src/instruction/utils/pumpswap.rs

@@ -30,10 +30,6 @@ pub mod seeds {
 pub mod accounts {
     use solana_sdk::{pubkey, pubkey::Pubkey};
 
-    use crate::instruction::utils::pumpswap::{
-        get_fee_config_pda, get_global_volume_accumulator_pda,
-    };
-
     /// Public key for the fee recipient
     pub const FEE_RECIPIENT: Pubkey = pubkey!("62qc2CNXwrYqQScmEdiZFFAnJR262PxWEuNQtxfafNgV");