db模块引入虚拟滚动树组件,改善大数据量下的性能问题

一些细节优化

zyplayer-doc-ui/db-ui/package.json

@@ -10,6 +10,7 @@
 		"@antv/x6": "^1.25.0",
 		"@antv/x6-vue-shape": "^1.1.6",
 		"@vue/composition-api": "^1.0.4",
+		"@wchbrad/vue-easy-tree": "^1.0.12",
 		"axios": "^0.19.0",
 		"brace": "^0.11.1",
 		"codemirror": "^5.61.1",
@@ -17,7 +18,9 @@
 		"echarts": "^4.9.0",
 		"element-ui": "^2.15.0",
 		"js-cookie": "^2.2.1",
+		"node-sass": "4.14.1",
 		"pouchdb": "^7.1.1",
+		"sass-loader": "8.0.2",
 		"sql-formatter": "^2.3.3",
 		"umy-ui": "^1.1.6",
 		"vue": "^2.6.10",