增加keepalive支持

src/index.js

@@ -344,6 +344,9 @@ export class Component extends HTMLElement {
       if (this.$animate?.immediate) {
         this.$animate()
       }
+      if (this.__keep_alive__) {
+        this.activated()
+      }
       this.mounted()
     } else {
       this.updated(props)
@@ -366,6 +369,8 @@ export class Component extends HTMLElement {
   // 几个生命周期回调
   created() {}
   mounted() {}
+  activated() {}
+  deactivated() {}
   unmounted() {}
   updated() {}
   render() {