refactor: Vm 状态分组、dispatch 拆分为分发表、IC 辅助函数独立成模块

crates/oxide_vm/src/lib.rs

@@ -4,6 +4,7 @@ pub mod bindings;
 pub mod builtins;
 pub mod coercion;
 mod dispatch;
+mod ic_helper;
 pub mod native;
 mod session_arena;
 pub mod session_gc;
@@ -13,5 +14,6 @@ mod vm_dispatch_misc;
 pub mod vm_pool;
 mod vm_props;
 mod vm_runtime;
+mod vm_state;
 mod vm_support;
 pub use oxide_types::value::JsValue;