feat(Popover): add anchor slot (#4119)

Co-authored-by: Jakub <jakub.michalek@freelo.io>
Co-authored-by: Benjamin Canac <canacb1@gmail.com>

src/runtime/components/Popover.vue

@@ -43,6 +43,7 @@ export interface PopoverEmits extends PopoverRootEmits {
 export interface PopoverSlots {
   default(props: { open: boolean }): any
   content(props?: {}): any
+  anchor(props?: {}): any
 }
 </script>
 
@@ -103,6 +104,10 @@ const Component = computed(() => props.mode === 'hover' ? HoverCard : Popover)
       <slot :open="open" />
     </Component.Trigger>
 
+    <Component.Anchor v-if="'Anchor' in Component && !!slots.anchor" as-child>
+      <slot name="anchor" />
+    </Component.Anchor>
+
     <Component.Portal v-bind="portalProps">
       <Component.Content v-bind="contentProps" :class="ui.content({ class: [!slots.default && props.class, props.ui?.content] })" v-on="contentEvents">
         <slot name="content" />