refactor(experiment_5):重构实验 5 数据格式和图表展示

- 移除 iris.csv 和 marketing.sql 文件
- 新增 sales_manager.csv 和 sales_month.csv 文件
- 添加 sales_manager.js 文件，实现销售数据的图表展示

experiment_5/task4/data/sales_product.json

@@ -0,0 +1,65 @@
+[
+	{
+	"name": "办公用品",
+    "value": 949270.224,
+    "children": [{
+        "name": "标签",
+        "value": 18936.54
+    }, {
+        "name": "美术",
+        "value": 33038.096
+    }, {
+        "name": "器具",
+        "value": 449744.764
+    }, {
+        "name": "收纳具",
+        "value": 214582.2
+    }, {
+        "name": "系固件",
+        "value": 20045.48
+    }, {
+        "name": "信封",
+        "value": 51941.96
+    }, {
+        "name": "用品",
+        "value": 47070.128
+    }, {
+        "name": "纸张",
+        "value": 51413.74
+    },{
+        "name": "装订机",
+        "value": 62497.316
+    }]
+}, {
+    "name": "技术",
+    "value": 937985.552,
+    "children": [{
+        "name": "电话",
+        "value": 330951.32
+    }, {
+        "name": "复印机",
+        "value": 347513.264
+    }, {
+        "name": "配件",
+        "value": 150562.664
+    }, {
+        "name": "设备",
+        "value": 108958.304
+    }]
+},  {
+    "name": "家具",
+    "value": 1028418.503,
+    "children": [{
+        "name": "书架",
+        "value": 366969.54
+    }, {
+        "name": "椅子",
+        "value": 409393.054
+    }, {
+        "name": "用具",
+        "value": 83848.996
+    }, {
+        "name": "桌子",
+        "value": 168206.913
+    }]
+}]