feat: add new `external` strategy for loading fonts

[ivodolenc]

Types of Changes

• [x] New feature 🚀
• [x] Documentation 📖

Additional Details

• Updates documentation
• Improves types and examples
• Adds new fontLoader.logs option to manage all terminal logs
• Adds new local.fallback & external.fallback options to define the font family fallback.

Request Description

External Strategy

To load fonts directly from third-party servers use external option.

The module will automatically detect servers and preload sources accordingly so you don't have to worry about it.

// nuxt.config.ts

{
  fontLoader: {
    external: [
      {
        src: 'https://fonts.googleapis.com/css2?family=Inter&display=swap',
        family: 'Inter',
        class: 'font-inter' // optional
      }
    ]
  }
}