feat(svelte): add Provider

packages/svelte/src/routes/usesvelteflow/Flow.svelte

@@ -5,55 +5,13 @@
     BackgroundVariant,
     Minimap,
     Panel,
-    createNodes,
-    createEdges,
     useSvelteFlow
   } from '../../lib/index';
  
-  const nodes = createNodes([
-    {
-      id: '1',
-      type: 'input',
-      data: { label: 'Input Node' },
-      position: { x: 150, y: 5 }
-    },
-    {
-      id: '2',
-      type: 'default',
-      data: { label: 'Node' },
-      position: { x: 0, y: 150 }
-    },
-    {
-      id: '3',
-      type: 'output',
-      data: { label: 'Output Node' },
-      position: { x: 300, y: 150 }
-    }
-  ]);
-
-  const edges = createEdges([
-    {
-      id: '1-2',
-      type: 'default',
-      source: '1',
-      target: '2',
-      label: 'Edge Text'
-    },
-    {
-      id: '1-3',
-      type: 'smoothstep',
-      source: '1',
-      target: '3'
-    }
-  ]);
-
   const svelteFlow = useSvelteFlow();
 </script>
 
-<SvelteFlow
-  {nodes}
-  {edges}
->
+<SvelteFlow>
   <Controls />
   <Background variant={BackgroundVariant.Dots} />
   <Minimap />