refactor(packages): change package structure

packages/svelte/src/lib/container/EdgeRenderer/MarkerDefinition/Marker.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-  import { type MarkerProps, MarkerType } from '@reactflow/system';
+  import { type MarkerProps, MarkerType } from '@xyflow/system';
 
   type $$Props = MarkerProps;
 

packages/svelte/src/lib/container/EdgeRenderer/utils.ts

@@ -1,11 +1,11 @@
-import { getHandlePosition } from '@reactflow/edge-utils';
+import { getHandlePosition } from '@xyflow/system';
 import {
   type NodeHandleBounds,
   type Rect,
   type HandleElement,
   Position,
   internalsSymbol
-} from '@reactflow/system';
+} from '@xyflow/system';
 
 import type { Node } from '$lib/types';