Initialize SHSF CLI project with core structure, configuration, and command handling

src/commands/testing/helloworld.ts

@@ -0,0 +1,9 @@
+import chalk from "chalk";
+
+export const helloworldDefinition = {
+  name: "helloworld",
+  description: "Prints Hello, World! to the terminal.",
+  action: async () => {
+    console.log(`${chalk.green("✓")} ${chalk.bgGreen.black(" Hello, World! ")}`);
+  },
+};