feat: better error messages, command line args

also display CLI version number

Author: urish

.eslintrc.js

@@ -12,5 +12,6 @@ module.exports = {
   rules: {
     '@typescript-eslint/explicit-function-return-type': 'off',
     '@typescript-eslint/strict-boolean-expressions': 'off',
+    '@typescript-eslint/restrict-template-expressions': 'off',
   },
 };