feat: rewrite programming-challenges CLI (#3)

cli/index.ts

@@ -0,0 +1,11 @@
+#!/usr/bin/env node
+import { Cli } from 'clipanion'
+
+import { cli } from './cli'
+
+const [, , ...args] = process.argv
+
+cli.runExit(args, Cli.defaultContext).catch(() => {
+  console.error('Error occurred...')
+  process.exit(1)
+})