[chore] Unplugin v2

[yoannmoinet]

Upgrade to Unplugin v2

Summary

Upgrades to Unplugin v2, migrating from deprecated APIs to the new filter/handler pattern for better performance.

Changes

Unplugin v2 Migration

• Migrated loadInclude → load.filter with RegExp pattern in injection plugin
• Migrated transformInclude → transform.filter with include/exclude arrays in RUM privacy plugin
• Updated wrapPlugins helper to handle both function and object hooks
• Removed deprecated hook names from UNPLUGIN_HOOKS array

Testing & Documentation

• Expanded test coverage for Unplugin v2 object hooks with filters
• Updated plugin creation templates to showcase new filter patterns
• Added comprehensive examples of filter types (RegExp, include/exclude, string patterns)

Breaking Changes

Plugins using loadInclude/transformInclude must migrate to filter/handler pattern.

Migration Example

// Before
{
  loadInclude(id) { return id.includes('virtual'); },
  load(id) { return { code: 'content' }; }
}

// After
{
  load: {
    filter: { id: /virtual/ },
    handler(id) { return { code: 'content' }; }
  }
}

[cy-moi]

Thank you! Privacy plugin side LGTM!

[sethfowler-datadog]

LGTM! Thank you for making this happen.