feat(Slideover): open programmatically (#1465)

Co-authored-by: Benjamin Canac <canacb1@gmail.com>

docs/content/2.components/slideover.md

@@ -33,7 +33,7 @@ Set the `transition` prop to `false` to disable it.
 
 ### Prevent close
 
-Use the `prevent-close` prop to disable the outside click alongside the `esc` keyboard shortcut. A `close-prevented` event will be emitted when the user tries to close the modal.
+Use the `prevent-close` prop to disable the outside click alongside the `esc` keyboard shortcut. A `close-prevented` event will be emitted when the user tries to close the slideover.
 
 :component-example{component="slideover-example-prevent-close"}
 
@@ -53,6 +53,24 @@ defineShortcuts({
 </script>
 ```
 
+### Control programmatically
+
+First of all, add the `USlideovers` component to your app, preferably inside `app.vue`.
+
+```vue [app.vue]
+<template>
+  <div>
+    <UContainer>
+      <NuxtPage />
+    </UContainer>
+    <USlideovers />
+  </div>
+</template>
+```
+
+Then, you can use the `useSlideover` composable to control your slideovers within your app.
+
+:component-example{component="slideover-example-composable"}
 ## Props
 
 :component-props