Showcase Submission for challenges/162-self-avoiding-walk (#1829)

* Added new contribution

* Move showcase to  to 52-random walker

started with example code in 162-alpha but showcase is probably better in 52

* Update contribution-1740344695.jpg

replace image

---------

Co-authored-by: Kathy McGuiness <kfm722@gmail.com>
Co-authored-by: Kathy <65121394+kfahn22@users.noreply.github.com>

Author: ch00ooch00oo

content/videos/challenges/52-random-walker/showcase/contribution-1740344695.jpg

@@ -0,0 +1,9 @@
+{
+  "title": "Color Updated Based on Frequency Data",
+  "author": {
+    "name": "Kathy McGuiness"
+  },
+  "url": "https://editor.p5js.org/kfahn/sketches/0L_LI2Wne",
+  "submittedOn": "2025-02-23T21:04:55.506Z",
+  "socialPermission": true
+}