Dev (#2)

* feat: svelte example for setting pannel

* Must destroy svelte

* onDestroy

* Make hello easy

* 拷贝官方的代码功能

* Use hello both in tab and dialog

* fix: destroy dock

src/i18n/en_US.json

@@ -1,3 +1,12 @@
 {
-    "name": "SiYuan"
+    "addTopBarIcon": "Add a top bar icon by plugin",
+    "cancel": "Cancel",
+    "save": "Save",
+    "byeMenu": "Bye, Menu!",
+    "helloPlugin": "Hello, Plugin!",
+    "byePlugin": "Bye, Plugin!",
+    "name": "SiYuan",
+    "hello": {
+        "makesure": "Before using this template, please read the <a href=\"https://github.com/siyuan-note/plugin-sample\">offical sample</a>, make sure that you've known about the pipeline for plugin developing."
+    }
 }