Add support for tile markers (#396)

Signed-off-by: Tomas Slusny <slusnucky@gmail.com>

Author: deathbeam

package-lock.json

@@ -14,11 +14,13 @@
     "@gouch/to-title-case": "2.2.1",
     "bootstrap": "4.4.1",
     "fastestsmallesttextencoderdecoder": "^1.0.22",
+    "leaflet": "^1.7.1",
     "platform": "1.3.5",
     "preact": "^10.4.1",
     "preact-router": "^3.2.1",
     "ramda": "0.27.0",
     "react-app-polyfill": "^1.0.6",
+    "react-leaflet": "^3.1.0",
     "react-redux": "^7.2.0",
     "redux": "4.0.5",
     "redux-actions": "2.6.5",