feat(hunt): track walking distance via GPS, show live locations on map

Add foreground-only GPS distance tracking for hunts

package.json

@@ -33,6 +33,7 @@
     "compressorjs": "^1.2.1",
     "eslint": "^9.0.0",
     "h3-zod": "^0.5.3",
+    "leaflet": "^1.9.4",
     "minio": "^8.0.5",
     "nuxt": "^4.1.0",
     "nuxt-auth-utils": "^0.5.22",
@@ -51,6 +52,7 @@
     "@electric-sql/pglite-socket": "^0.2.8",
     "@nuxt/devtools": "^2.6.4",
     "@types/bun": "^1.2.20",
+    "@types/leaflet": "^1.9.22",
     "prettier": "^3.6.2",
     "prettier-plugin-organize-imports": "^4.2.0",
     "prettier-plugin-tailwindcss": "^0.6.14",