add build cli

packages/cli/build.js

@@ -0,0 +1,14 @@
+import pkg from './package.json' assert { type: 'json' }
+import { build } from 'tsup'
+
+const watch = process.argv.slice(2)[0] === '--watch'
+
+await build({
+  entry: ['src/index.ts', 'src/cli.ts'],
+  dts: true,
+  minify: true,
+  format: ['esm', 'cjs'],
+  clean: true,
+  define: { VERSION: `"${pkg.version}"` },
+  watch,
+})