add a location marker to a new plan

package-lock.json

@@ -61,6 +61,7 @@
         "@types/three": "^0.152.1",
         "@typescript-eslint/eslint-plugin": "^5.61.0",
         "@typescript-eslint/parser": "^5.61.0",
+        "@vue-leaflet/vue-leaflet": "^0.10.1",
         "@vue/cli-plugin-babel": "~5.0.8",
         "@vue/cli-plugin-eslint": "~5.0.8",
         "@vue/cli-plugin-pwa": "~5.0.8",
@@ -74,6 +75,7 @@
         "eslint-config-prettier": "^8.8.0",
         "eslint-plugin-prettier": "^5.0.0-alpha.1",
         "eslint-plugin-vue": "^9.15.1",
+        "leaflet": "^1.9.4",
         "postcss": "^8.4.24",
         "prettier": "^3.0.0",
         "tailwindcss": "^3.3.2",
@@ -9639,6 +9641,24 @@
         "uint8arrays": "^3.0.0"
       }
     },
+    "node_modules/@vue-leaflet/vue-leaflet": {
+      "version": "0.10.1",
+      "resolved": "https://registry.npmjs.org/@vue-leaflet/vue-leaflet/-/vue-leaflet-0.10.1.tgz",
+      "integrity": "sha512-RNEDk8TbnwrJl8ujdbKgZRFygLCxd0aBcWLQ05q/pGv4+d0jamE3KXQgQBqGAteE1mbQsk3xoNcqqUgaIGfWVg==",
+      "dev": true,
+      "dependencies": {
+        "vue": "^3.2.25"
+      },
+      "peerDependencies": {
+        "@types/leaflet": "^1.5.7",
+        "leaflet": "^1.6.0"
+      },
+      "peerDependenciesMeta": {
+        "@types/leaflet": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/@vue/babel-helper-vue-jsx-merge-props": {
       "version": "1.4.0",
       "resolved": "https://registry.npmmirror.com/@vue/babel-helper-vue-jsx-merge-props/-/babel-helper-vue-jsx-merge-props-1.4.0.tgz",
@@ -19067,6 +19087,12 @@
         "launch-editor": "^2.6.0"
       }
     },
+    "node_modules/leaflet": {
+      "version": "1.9.4",
+      "resolved": "https://registry.npmjs.org/leaflet/-/leaflet-1.9.4.tgz",
+      "integrity": "sha512-nxS1ynzJOmOlHp+iL3FyWqK89GtNL8U8rvlMOsQdTTssxZwCXh8N2NB3GDQOL+YR3XnWyZAxwQixURb+FA74PA==",
+      "dev": true
+    },
     "node_modules/leven": {
       "version": "3.1.0",
       "resolved": "https://registry.npmmirror.com/leven/-/leven-3.1.0.tgz",