feat(svelte): add attribution

packages/svelte/src/lib/container/Panel/types.ts

@@ -3,6 +3,7 @@ import type { HTMLAttributes } from 'svelte/elements';
 
 export type PanelProps = HTMLAttributes<HTMLDivElement> & {
   'data-testid'?: string;
+  'data-message'?: string;
   position?: PanelPosition;
   style?: string;
   class?: string;

packages/svelte/src/lib/container/SvelteFlow/SvelteFlow.svelte

@@ -11,6 +11,7 @@
   import { NodeSelection } from '$lib/components/NodeSelection';
   import { KeyHandler } from '$lib/components/KeyHandler';
   import { ConnectionLine } from '$lib/components/ConnectionLine';
+  import { Attribution } from '$lib/components/Attribution';
   import { useStore } from '$lib/store';
   import type { SvelteFlowProps } from './types';
 
@@ -122,6 +123,7 @@
       <UserSelection />
     </Pane>
   </Zoom>
+  <Attribution />
   <slot />
 </div>