feat: use nextjs experimental externalDir

[belgattitude]

Purpose

Trying out recent externalDir offered by NextJs: vercel/next.js#22867. It works perfect even supporting svg and offer comparable speed.

Benchmarks

With experimental/externalDirs

**FIRST BUILD: 22 seconds **:
(mean ± σ): 9 seconds:

With previous implementation (webpack)

Example of next.config.js overrides

const nextConfig = {
  webpack: function (config, { defaultLoaders }) {
    // This extra config allows to use paths defined in tsconfig
    // @link https://github.com/vercel/next.js/pull/13542
    const resolvedBaseUrl = path.resolve(config.context, '../../');
    config.module.rules = [
      ...config.module.rules,
      {
        test: /\.(tsx|ts|js|jsx|json)$/,
        include: [resolvedBaseUrl],
        use: defaultLoaders.babel,
        exclude: (excludePath) => {
          return /node_modules/.test(excludePath);
        },
      },
    ];
    return config;
  },
};

**FIRST BUILD: 22 seconds **:
(mean ± σ): 9 seconds:

[changeset-bot]

🦋 Changeset detected

Latest commit: e321b8c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
blog-app	Minor
web-app	Minor

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Click here if you're a maintainer who wants to add another changeset to this PR

[vercel]

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nextjs-monorepo-example-blog-app – ./apps/blog-app

🔍 Inspect: https://vercel.com/belgattitude/nextjs-monorepo-example-blog-app/35gv5tEMWW2ZxsEN2KD8JrhDUqK8
✅ Preview: https://nextjs-monorepo-example-blog-app-git-experi-c38d06-belgattitude.vercel.app

nextjs-monorepo-example-web-app – ./apps/web-app

🔍 Inspect: https://vercel.com/belgattitude/nextjs-monorepo-example-web-app/8ctNB46bupJfQxz5ZoWR8Dgt4zRo
✅ Preview: https://nextjs-monorepo-example-web-app-git-experim-931bbf-belgattitude.vercel.app

[qlty-cloud-legacy]

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