refactor(template): convert the default template from CMJs to esm

[ThierryRakotomanana]

Summary

Currently, the official Getting Started using quick start minimal uses ES Modules (ESM) syntax. However, the command npx create-webpack-app still generates a webpack.config.js using CommonJS (require/module.exports). This creates a confusing experience for new users.

This PR rectifies webpack.config.js tempate to generate an ES Modules config by default.

What kind of change does this PR introduce?

It's refactor, I refactor the default config template
Did you add tests for your changes?
I've updated all test cases,

Does this PR introduce a breaking change?
Not really, just an update

If relevant, what needs to be documented once your changes are merged or what have you already documented?

Use of AI
No need,

[changeset-bot]

⚠️ No Changeset found

Latest commit: 92d8f3f

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[alexander-akait]

You need to update all test cases, not just change it in template

[ThierryRakotomanana]

@alexander-akait test cases updated

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.43%. Comparing base (49efdc0) to head (92d8f3f).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4709   +/-   ##
=======================================
  Coverage   91.43%   91.43%           
=======================================
  Files          14       14           
  Lines        4716     4716           
  Branches      679      679           
=======================================
  Hits         4312     4312           
  Misses        402      402           
  Partials        2        2           

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[alexander-akait]

Let's covert all templates in init, not only default, because we recommend to use ECMA modules everywhere