add starlight docs addon

apps/cli/src/helpers/starlight-setup.ts

@@ -0,0 +1,64 @@
+import path from "node:path";
+import { log, spinner } from "@clack/prompts";
+import { execa } from "execa";
+import pc from "picocolors";
+import type { ProjectPackageManager } from "../types";
+
+export async function setupStarlight(
+	projectDir: string,
+	packageManager: ProjectPackageManager,
+): Promise<void> {
+	const s = spinner();
+
+	try {
+		s.start("Setting up Starlight documentation site...");
+
+		let cmd: string;
+		let args: string[];
+
+		switch (packageManager) {
+			case "npm":
+				cmd = "npx";
+				args = ["create-astro@latest"];
+				break;
+			case "pnpm":
+				cmd = "pnpm";
+				args = ["dlx", "create-astro@latest"];
+				break;
+			case "bun":
+				cmd = "bunx";
+				args = ["create-astro@latest"];
+				break;
+			default:
+				cmd = "npx";
+				args = ["create-astro@latest"];
+		}
+
+		args = [
+			...args,
+			"docs",
+			"--template",
+			"starlight",
+			"--no-install",
+			"--add",
+			"tailwind",
+			"--no-git",
+			"--skip-houston",
+		];
+
+		await execa(cmd, args, {
+			cwd: path.join(projectDir, "apps"),
+			env: {
+				CI: "true",
+			},
+		});
+
+		s.stop("Starlight documentation site setup successfully!");
+	} catch (error) {
+		s.stop(pc.red("Failed to set up Starlight documentation site"));
+		if (error instanceof Error) {
+			log.error(pc.red(error.message));
+		}
+		throw error;
+	}
+}