add lists & VM memory limits

crates/haku/tests/language.rs

@@ -44,6 +44,7 @@ fn eval(code: &str) -> Result<Value, Box<dyn Error>> {
         call_stack_capacity: 256,
         ref_capacity: 256,
         fuel: 32768,
+        memory: 1024,
     };
     let mut vm = Vm::new(defs, &limits);
     let chunk_id = system.add_chunk(chunk)?;