refactor: convert EventParser to static methods and optimize caching

- Replace instance-based EventParser with static method design
  - Introduce ParserCache module for protocol config caching
  - Simplify EventProcessor to pure functional handlers
  - Optimize metrics: remove min/max tracking, keep last + avg only
  - Reduce atomic operations in hot path for better performance

src/streaming/event_parser/protocols/bonk/parser.rs

@@ -2,7 +2,7 @@ use solana_sdk::pubkey::Pubkey;
 
 use crate::streaming::event_parser::{
     common::{utils::*, EventMetadata, EventType, ProtocolType},
-    core::event_parser::GenericEventParseConfig,
+    core::GenericEventParseConfig,
     protocols::bonk::{
         bonk_pool_create_event_log_decode, bonk_trade_event_log_decode, discriminators, AmmFeeOn,
         BonkMigrateToAmmEvent, BonkMigrateToCpswapEvent, BonkPoolCreateEvent, BonkTradeEvent,

src/streaming/event_parser/protocols/pumpfun/parser.rs

@@ -1,6 +1,6 @@
 use crate::streaming::event_parser::{
     common::{EventMetadata, EventType, ProtocolType},
-    core::event_parser::GenericEventParseConfig,
+    core::GenericEventParseConfig,
     protocols::pumpfun::{
         discriminators, pumpfun_create_token_event_log_decode, pumpfun_migrate_event_log_decode,
         pumpfun_trade_event_log_decode, PumpFunCreateTokenEvent, PumpFunMigrateEvent,

src/streaming/event_parser/protocols/pumpswap/parser.rs

@@ -1,6 +1,6 @@
 use crate::streaming::event_parser::{
     common::{read_u64_le, EventMetadata, EventType, ProtocolType},
-    core::event_parser::GenericEventParseConfig,
+    core::GenericEventParseConfig,
     protocols::pumpswap::{
         discriminators, pump_swap_buy_event_log_decode, pump_swap_create_pool_event_log_decode,
         pump_swap_deposit_event_log_decode, pump_swap_sell_event_log_decode,

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

@@ -1,6 +1,6 @@
 use crate::streaming::event_parser::{
     common::{read_u64_le, EventMetadata, EventType, ProtocolType},
-    core::event_parser::GenericEventParseConfig,
+    core::GenericEventParseConfig,
     protocols::raydium_amm_v4::{
         discriminators, RaydiumAmmV4DepositEvent, RaydiumAmmV4Initialize2Event,
         RaydiumAmmV4SwapEvent, RaydiumAmmV4WithdrawEvent, RaydiumAmmV4WithdrawPnlEvent,

src/streaming/event_parser/protocols/raydium_clmm/parser.rs

@@ -3,7 +3,7 @@ use crate::streaming::event_parser::{
         read_i32_le, read_option_bool, read_u128_le, read_u64_le, read_u8_le, EventMetadata,
         EventType, ProtocolType,
     },
-    core::event_parser::GenericEventParseConfig,
+    core::GenericEventParseConfig,
     protocols::raydium_clmm::{
         discriminators, RaydiumClmmClosePositionEvent, RaydiumClmmCreatePoolEvent,
         RaydiumClmmDecreaseLiquidityV2Event, RaydiumClmmIncreaseLiquidityV2Event,

src/streaming/event_parser/protocols/raydium_cpmm/parser.rs

@@ -2,7 +2,7 @@ use solana_sdk::pubkey::Pubkey;
 
 use crate::streaming::event_parser::{
     common::{read_u64_le, EventMetadata, EventType, ProtocolType},
-    core::event_parser::GenericEventParseConfig,
+    core::GenericEventParseConfig,
     protocols::raydium_cpmm::{
         discriminators, RaydiumCpmmDepositEvent, RaydiumCpmmInitializeEvent, RaydiumCpmmSwapEvent,
         RaydiumCpmmWithdrawEvent,