added super basic cli

cli/main.tsx

@@ -0,0 +1,31 @@
+import { createCliRenderer } from "@opentui/core";
+import { createRoot, useKeyboard, useTerminalDimensions } from "@opentui/react";
+
+function App() {
+	const { width, height } = useTerminalDimensions();
+
+	useKeyboard((key) => {
+		if (
+			key.name === "q" ||
+			key.name === "escape" ||
+			(key.ctrl && key.name === "c")
+		) {
+			process.exit(0);
+		}
+	});
+
+	const text = "ob248.com";
+	const x = Math.floor((width - text.length) / 2);
+	const y = Math.floor(height / 2);
+
+	return (
+		<box width={width} height={height}>
+			<text x={x} y={y}>
+				{text}
+			</text>
+		</box>
+	);
+}
+
+const renderer = await createCliRenderer();
+createRoot(renderer).render(<App />);