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/core/lua/LuaLiteralNumber.js

@@ -0,0 +1,39 @@
+/**
+ * @typedef {import('./LuaLiteralTypes.js').LuaLiteralHandler} LuaLiteralHandler
+ */
+
+/** @type {LuaLiteralHandler} */
+export const LuaLiteralNumber = {
+  /**
+   * @param {unknown} value
+   * @returns {string}
+   */
+  format(value) {
+    const numeric = Number(value);
+    return Number.isFinite(numeric) ? String(numeric) : "0";
+  },
+
+  /** @returns {string} */
+  defaultLiteral() {
+    return "0";
+  },
+
+  spawnableByDefault: true,
+
+  nodeModule: {
+    definition: {
+      id: "number_literal",
+      title: "Number",
+      category: "Values",
+      description: "Constant numeric literal.",
+      searchTags: ["number", "literal", "constant", "value"],
+      inputs: [],
+      outputs: [{ id: "value", name: "Value", direction: "output", kind: "number" }],
+      properties: [{ key: "value", label: "Number", type: "number", defaultValue: 0 }],
+    },
+    behavior: {
+      evaluateValue: ({ node, formatLiteral }) =>
+        formatLiteral("number", node.properties.value ?? 0),
+    },
+  },
+};