feat(additional-components): add Panel component

packages/additional-components/src/panel/Panel.vue

@@ -0,0 +1,15 @@
+<script lang="ts" setup>
+import { useVueFlow } from '@vue-flow/core'
+import type { PanelProps } from './types'
+
+const props = defineProps<PanelProps>()
+
+const pointerEvents = useVueFlow()
+const positionClasses = computed(() => `${props.position}`.split('-'))
+</script>
+
+<template>
+  <div class="vue-flow__panel" :class="positionClasses" :style="{ pointerEvents }">
+    <slot />
+  </div>
+</template>