Add initial Pico-8 cartridges for testing

- Created test_cart.p8 with basic drawing functionality and a print statement.
- Created test_unix.p8 with a simple initialization function.

scripts/types/AnyType.js

@@ -0,0 +1,13 @@
+/**
+ * @typedef {import('./TypeRegistry.js').TypeDescriptor} TypeDescriptor
+ */
+
+/** @type {TypeDescriptor} */
+export const AnyType = {
+  id: "any",
+  label: "Any",
+  color: "#ff7f11",
+  isVariable: true,
+  isLocalVariable: false,
+  defaultValue: null,
+};