feature/boss-sprites-and-badges (#22)

Reviewed-on: TheFurya/nuzlocke-tracker#22
Co-authored-by: Julian Tabel <juliantabel.jt@gmail.com>
Co-committed-by: Julian Tabel <juliantabel.jt@gmail.com>

frontend/src/pages/RunEncounters.tsx

@@ -1376,7 +1376,7 @@ export function RunEncounters() {
                           <path strokeLinecap="round" strokeLinejoin="round" d="M9 5l7 7-7 7" />
                         </svg>
                         {boss.spriteUrl && (
-                          <img src={boss.spriteUrl} alt={boss.name} className="w-10 h-10" />
+                          <img src={boss.spriteUrl} alt={boss.name} className="h-10 w-auto" />
                         )}
                         <div>
                           <div className="flex items-center gap-2">