workflow底层UI库整合至项目，优化构建逻辑

easyflow-ui-admin/packages/tinyflow-ui/src/components/utils/useGetNodeRelativePosition.svelte.ts

@@ -0,0 +1,22 @@
+import {store} from '#store/stores.svelte';
+
+export const useGetNodeRelativePosition = () => {
+    const getNodeRelativePosition = (parentNodeId: string) => {
+        let node = store.getNode(parentNodeId);
+        const position = { x: 0, y: 0 };
+        while (node) {
+            position.x += node.position.x;
+            position.y += node.position.y;
+
+            if (node.parentId) {
+                node = store.getNode(node.parentId);
+            } else {
+                node = undefined;
+            }
+        }
+        return position;
+    };
+    return {
+        getNodeRelativePosition
+    };
+};