Added Beyond Better to showcase (#3547)

Author: cngarrison

www/data/showcase.json

@@ -40,6 +40,12 @@
     "github": "denoland/fresh/tree/main/www",
     "image": "fresh"
   },
+  {
+    "title": "Beyond Better",
+    "link": "https://beyondbetter.app",
+    "github": "Beyond-Better/bb",
+    "image": "beyondbetter"
+  },
   {
     "title": "Video Poker Academy",
     "link": "https://videopoker-academy.deno.dev/",