clients page: make add form a modal

src/lib/components/ui/dialog/dialog-description.svelte

@@ -0,0 +1,16 @@
+<script lang="ts">
+	import { Dialog as DialogPrimitive } from "bits-ui";
+	import { cn } from "$lib/utils.js";
+
+	type $$Props = DialogPrimitive.DescriptionProps;
+
+	let className: $$Props["class"] = undefined;
+	export { className as class };
+</script>
+
+<DialogPrimitive.Description
+	class={cn("text-muted-foreground text-sm", className)}
+	{...$$restProps}
+>
+	<slot />
+</DialogPrimitive.Description>