add 增加logicflow流程图预览

src/components/Process/js/between.js

@@ -0,0 +1,21 @@
+import { RectNode, RectNodeModel } from '@logicflow/core';
+
+class BetweenModel extends RectNodeModel {
+  initNodeData(data) {
+    super.initNodeData(data);
+    this.width = 100;
+    this.height = 80;
+    this.radius = 5;
+  }
+  getNodeStyle() {
+    return super.getNodeStyle();
+  }
+}
+
+class BetweenView extends RectNode {}
+
+export default {
+  type: 'between',
+  model: BetweenModel,
+  view: BetweenView
+};