feat(Modal): open programmatically (#1319)

docs/components/content/examples/ModalExampleComponent.vue

@@ -0,0 +1,17 @@
+<script lang="ts" setup>
+defineProps({
+  count: {
+    type: Number,
+    default: 0
+  }
+})
+</script>
+
+<template>
+  <UModal>
+    <UCard>
+      <p>This modal was opened programmatically !</p>
+      <p>Count: {{ count }}</p>
+    </UCard>
+  </UModal>
+</template>

docs/components/content/examples/ModalExampleComposable.vue

@@ -0,0 +1,17 @@
+<script setup lang="ts">
+import { ModalExampleComponent } from '#components'
+
+const modal = useModal()
+const count = ref(0)
+
+function openModal () {
+  count.value += 1
+  modal.open(ModalExampleComponent, {
+    count: count.value
+  })
+}
+</script>
+
+<template>
+  <UButton label="Reveal modal" @click="openModal" />
+</template>