chore(): start moving some packages to the core directory (#7215)

packages/cli/medusa-cli/scripts/postinstall.js

@@ -0,0 +1,16 @@
+const chalk = require(`chalk`)
+
+const showSuccessMessage = () => {
+  console.log(chalk.green(`Success!\n`))
+  console.log(chalk.cyan(`Welcome to the Medusa CLI!`))
+}
+
+try {
+  // check if it's a global installation of medusa-cli
+  const npmArgs = JSON.parse(process.env[`npm_config_argv`])
+  if (npmArgs.cooked && npmArgs.cooked.includes(`--global`)) {
+    const createCli = require(`../dist/create-cli`)
+    showSuccessMessage()
+    createCli(`--help`)
+  }
+} catch (e) {}