refactor: 将基础类型定义放在单独 crate 以解决循环依赖

crates/oxide_vm/tests/mem_tests.rs

@@ -1,6 +1,6 @@
 use std::time::Instant;
 
-use oxide_vm::mem::{Epoch, PersistentHeap};
+use oxide_types::mem::{Epoch, PersistentHeap};
 
 #[test]
 fn epoch_alloc_and_read() {

crates/oxide_vm/tests/vm_tests.rs

@@ -1,6 +1,6 @@
 use oxide_compiler::compiler::Compiler;
 use oxide_parser::Allocator;
-use oxide_vm::value::JsValue;
+use oxide_types::value::JsValue;
 use oxide_vm::vm::Vm;
 
 fn eval(source: &str) -> String {