add nova

nova/resources/js/components/CollapseButton.vue

@@ -0,0 +1,17 @@
+<template>
+  <IconArrow
+    class="transform"
+    :class="{ 'ltr:-rotate-90 rtl:rotate-90': collapsed }"
+  />
+</template>
+
+<script>
+export default {
+  props: {
+    collapsed: {
+      type: Boolean,
+      default: false,
+    },
+  },
+}
+</script>