refactor: init cypress-cucumber-preprocessor install.

node_modules/@babel/plugin-proposal-class-properties/README.md

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+# @babel/plugin-proposal-class-properties
+
+> This plugin transforms static class properties as well as properties declared with the property initializer syntax
+
+See our website [@babel/plugin-proposal-class-properties](https://babeljs.io/docs/en/next/babel-plugin-proposal-class-properties.html) for more information.
+
+## Install
+
+Using npm:
+
+```sh
+npm install --save-dev @babel/plugin-proposal-class-properties
+```
+
+or using yarn:
+
+```sh
+yarn add @babel/plugin-proposal-class-properties --dev
+```