feat: use v-html for node labels

* add span tag as wrapper for node labels

feat(examples):

* Add overview example

src/composables/useKeyPress.ts

@@ -2,6 +2,7 @@ import { Ref } from 'vue'
 import { onKeyDown, onKeyPressed, onKeyUp } from '@vueuse/core'
 import { KeyCode } from '~/types'
 
+// todo cancel keypress for input dom nodes
 export default (keyCode: KeyCode, onChange?: (keyPressed: boolean) => void): Ref<boolean> => {
   const isPressed = controlledRef<boolean>(false, {
     onBeforeChange(val, oldVal) {