feat: add map interaction and coordinate plotter tools, optimize dev config

1. 新增图上量测与拾取、坐标展点两个地图工具页面
2. 安装leaflet依赖并配置vite开发服务器允许局域网访问
3. 更新首页工具列表，新增两个工具入口
4. 优化坐标转换器默认参数和文件读取方式
5. 调整面积计算精度，删除无用的HelloWorld组件

package-lock.json

@@ -10,6 +10,7 @@
       "dependencies": {
         "@turf/turf": "^7.3.3",
         "gcoord": "^1.0.7",
+        "leaflet": "^1.9.4",
         "lucide-vue-next": "^0.563.0",
         "proj4": "^2.20.4",
         "vue": "^3.5.24",
@@ -3354,6 +3355,12 @@
       "integrity": "sha512-WbCVYJ27Sz8zi9Q7Q0xHC+05iwkm3Znipc2XTlrnJbsHMYktW4hPhXUE8Ys1engBrvffoSCqbil1JQAa7clRpA==",
       "license": "ISC"
     },
+    "node_modules/leaflet": {
+      "version": "1.9.4",
+      "resolved": "https://registry.npmjs.org/leaflet/-/leaflet-1.9.4.tgz",
+      "integrity": "sha512-nxS1ynzJOmOlHp+iL3FyWqK89GtNL8U8rvlMOsQdTTssxZwCXh8N2NB3GDQOL+YR3XnWyZAxwQixURb+FA74PA==",
+      "license": "BSD-2-Clause"
+    },
     "node_modules/lucide-vue-next": {
       "version": "0.563.0",
       "resolved": "https://registry.npmjs.org/lucide-vue-next/-/lucide-vue-next-0.563.0.tgz",