Adds JavaScript roadmap (#1537)

* Add JavaScript roadmap project file

* Make way for JavaScript roadmap

* Add JavaScript roadmap on homepage

* Add JavaScript roadmap image

* Add content skeleton for javascript roadmap

* Fix flicker issue on javascript roadmap

* Fix broken build

lib/roadmap.ts

@@ -43,5 +43,5 @@ export function getFeaturedRoadmaps(): RoadmapType[] {
 }
 
 export function isInteractiveRoadmap(id: string): boolean {
-  return ['frontend', 'backend', 'devops', 'react', 'vue', 'python', 'java', 'blockchain', 'golang'].includes(id);
+  return ['frontend', 'backend', 'devops', 'react', 'vue', 'python', 'java', 'blockchain', 'golang', 'javascript'].includes(id);
 }