add new example

Author: vislupus

content/videos/noc/1-vectors/1-what-is-a-vector/showcase/contribution2.jpg

@@ -0,0 +1,9 @@
+{
+  "title": "Random walker",
+  "author": {
+    "name": "Nikola Bozhinov",
+    "url": "https://github.com/vislupus"
+  },
+  "url": "https://vislupus.github.io/p5-simulations/random_walkers.html",
+  "submittedOn": "2025-01-10"
+}