feat: Update command.svelte to expose bits-ui imperative API (#2337)

Co-authored-by: Hunter Johnston <[email protected]>

Author: leonardosahon

docs/src/lib/registry/ui/command/command.svelte

@@ -1,16 +1,22 @@
 <script lang="ts">
-	import { Command as CommandPrimitive } from "bits-ui";
 	import { cn } from "$lib/utils.js";
+	import { Command as CommandPrimitive } from "bits-ui";
+
+	export type CommandRootApi = CommandPrimitive.Root;
 
 	let {
+		api = $bindable(null),
 		ref = $bindable(null),
 		value = $bindable(""),
 		class: className,
 		...restProps
-	}: CommandPrimitive.RootProps = $props();
+	}: CommandPrimitive.RootProps & {
+		api?: CommandRootApi | null;
+	} = $props();
 </script>
 
 <CommandPrimitive.Root
+	bind:this={api}
 	bind:value
 	bind:ref
 	data-slot="command"