feat: 新增数据mock，数据字段映射

src/packages/components/VChart/Bars/VChartBarCommon/config.ts

@@ -14,7 +14,7 @@ export const option: IBarOption & { dataset?: any } = {
   dataset: data,
   stack: true,
   xField: ['year', 'type'],
-  yField: 'value',
+  yField: ['value'],
   seriesField: 'type',
   // 业务配置（后续会被转换为图表spec)
   category: VChartBarCommonConfig.category,

src/packages/components/VChart/Bars/VChartBarCommon/data.json

@@ -10,6 +10,7 @@
     { "type": "Autocracies", "year": "2000", "value": 89 },
     { "type": "Autocracies", "year": "2010", "value": 80 },
     { "type": "Autocracies", "year": "2018", "value": 80 },
+
     { "type": "Democracies", "year": "1930", "value": 22 },
     { "type": "Democracies", "year": "1940", "value": 13 },
     { "type": "Democracies", "year": "1950", "value": 25 },