Lazy require init dependencies

[kinetifex]

Summary

Lazying require webpack fixes the error with creating new apps with more recent versions of Next.js

> gasket create basic-next-app -p @gasket/preset-nextjs
Error: Cannot find module 'webpack'

This PR also defers other requires for init-related dependencies.

Changelog

@gasket/plugin-webpack

• Lazy require webpack dependencies

Test Plan

• Locally tested with create command

gasket create <APP_NAME> -p @gasket/preset-nextjs --plugins @gasket/plugin-webpack@file:/<PATH_TO>/godaddy/gasket/packages/gasket-plugin-webpack

[kawikabader]

👏🏻