Add bubble witch icon url override

Author: chrisinajar

src/components/hero-icon.jsx

@@ -8,6 +8,7 @@ export const CustomHeroImage = {
   electrician: "https://raw.githubusercontent.com/OpenAngelArena/oaa/master/content/panorama/images/heroes/npc_dota_hero_electrician.png",
   sohei: "https://raw.githubusercontent.com/OpenAngelArena/oaa/master/content/panorama/images/heroes/npc_dota_hero_sohei.png",
   eul: "https://raw.githubusercontent.com/OpenAngelArena/oaa/master/content/panorama/images/heroes/npc_dota_hero_eul.png",
+  bubble_witch: "https://raw.githubusercontent.com/OpenAngelArena/oaa/master/content/panorama/images/heroes/npc_dota_hero_bubble_witch.png",
 };
 
 export function imgUrlForHero(hero) {