Add Atari Basketball (1979)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: tsemachh

emu/library/Basketball.xex

@@ -33,6 +33,13 @@
       "category": "shooter",
       "description": "Atari, 1981"
     },
+    {
+      "name": "Basketball",
+      "file": "Basketball.xex",
+      "joystick": "dpad8",
+      "category": "sports",
+      "description": "Atari, 1979"
+    },
     {
       "name": "Battlezone",
       "file": "Battlezone.xex",