Added new contribution

Author: Bart De Meyere

content/videos/challenges/15-object-oriented-fractal-trees/showcase/contribution-1709840752.jpg

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+{
+  "title": "fractal tree object oriented",
+  "author": {
+    "name": "Bart De Meyere"
+  },
+  "url": "https://bartdemeyere.github.io/fractaltree/",
+  "submittedOn": "2024-03-07T19:45:53.033Z"
+}