refactor(all): add test file

data/reports/bar/two_group_bar_flow.csv

 FLOW ID,是否启用,名称,触发条件,触发条件参数,存储模式,
-70122,TRUE,three_traces_flow,Manual,,Memory,
+70122,TRUE,two_group_bar,Manual,,Memory,
 ,,,,,,
 FLOW ID,节点ID,名称,节点类型,参数,,
 70122,1,plot_data,SOURCE_URL,https://shufengdong.github.io/sparrowzz/data/reports/bar/two_group_bar.csv,,

data/reports/bar/two_group_bar_layout.json

+{
+  "title": "2013 Sales Report",
+  "xaxis": {
+    "tickangle": -45
+  },
+  "barmode": "group"
+}

data/reports/bar/two_group_bar_style1.json

+[
+  {
+    "name": "trace1",
+    "x_series": "trace0",
+    "marker": {
+      "color": "rgb(49,130,189)",
+      "opacity": 0.7
+    }
+  },
+  {
+    "name": "trace2",
+    "x_series": "trace0",
+    "marker": {
+      "color": "rgb(204,204,204)",
+      "opacity": 0.5
+    }
+  }
+]