feat: add @vant/use

packages/vant-use/src/useToggle/index.ts

@@ -0,0 +1,10 @@
+import { ref } from 'vue';
+
+export function useToggle(defaultValue = false) {
+  const state = ref(defaultValue);
+  const toggle = (value = !state.value) => {
+    state.value = value;
+  };
+
+  return [state, toggle];
+}