Add Socratica to the resource list.

Closes python-discord/meta#119

Author: lemonsaurus

pydis_site/apps/resources/resources/socratica.yaml

@@ -0,0 +1,16 @@
+description: 'Socratica is a small studio focused on producing high quality STEM-related educational content,
+including a series about Python. Their videos star actress Ulka Simone Mohanty, who plays an android-like
+instructor explaining fundamental Python concepts in a concise and entertaining way.'
+title_image: https://i.imgur.com/4SoHeLz.png
+title_url: https://www.youtube.com/playlist?list=PLi01XoE8jYohWFPpC17Z-wWhPOSuh8Er-
+tags:
+  topics:
+    - general
+    - databases
+  payment_tiers:
+    - free
+    - subscription
+  difficulty:
+    - beginner
+  type:
+    - video