Use query parameters for roadmap switching

src/components/FrameRenderer/renderer.js

@@ -84,8 +84,15 @@ export class Renderer {
       return;
     }
 
+    const urlParams = new URLSearchParams(window.location.search);
+    const roadmapType = urlParams.get('r');
+
+    if (roadmapType) {
+      this.switchRoadmap(`/jsons/roadmaps/${roadmapType}.json`);
+    } else {
       this.jsonToSvg(this.jsonUrl);
     }
+  }
 
   switchRoadmap(newJsonUrl) {
     const newJsonFileSlug = newJsonUrl.split('/').pop().replace('.json', '');