feat(env): move env out of vm,

src/ty/internal/attrset.rs

@@ -5,8 +5,9 @@ use hashbrown::{HashMap, HashSet};
 use derive_more::Constructor;
 use itertools::Itertools;
 
+use crate::env::VmEnv;
 use crate::error::Result;
-use crate::vm::{VM, VmEnv};
+use crate::vm::VM;
 
 use super::super::public as p;
 use super::Value;