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/common/filter.rs

@@ -2,7 +2,7 @@ use crate::streaming::event_parser::common::{
     types::EventType, ACCOUNT_EVENT_TYPES, BLOCK_EVENT_TYPES,
 };
 
-#[derive(Debug, Clone, Default)]
+#[derive(Debug, Clone, Default, PartialEq, Eq, Hash)]
 pub struct EventTypeFilter {
     pub include: Vec<EventType>,
 }

src/streaming/event_parser/common/types.rs

@@ -56,7 +56,7 @@ pub enum ProtocolType {
 
 /// Event type enumeration
 #[derive(
-    Debug, Clone, Default, PartialEq, Eq, Serialize, Deserialize, BorshSerialize, BorshDeserialize,
+    Debug, Clone, Default, PartialEq, Eq, Hash, Serialize, Deserialize, BorshSerialize, BorshDeserialize,
 )]
 pub enum EventType {
     // PumpSwap events