Victoria Ashworth 5a63b1df95
Add create app and plugin templates for Swift Package Manager (#147082)
When Swift Package Manager feature is enabled, create app and create plugin will have Swift Package Manager integration already added and will not need to undergo a migration.

Fixes https://github.com/flutter/flutter/issues/146371.

```
flutter config --enable-swift-package-manager

flutter create --ios-language swift --platforms ios,macos swift_app_name

flutter create --ios-language objc --platforms ios objc_app_name

flutter create --template=plugin --ios-language swift --platforms ios,macos swift_plugin_name

flutter create --template=plugin --ios-language objc --platforms ios objc_plugin_name
```
2024-04-24 22:46:20 +00:00
..

This directory contains templates for flutter create.

The *_shared subdirectories provide files for multiple templates.

  • app_shared for app and skeleton.
  • plugin_shared for (method channel) plugin and plugin_ffi.

For example, there are two app templates: app (the counter app) and skeleton (the more advanced list view/detail view app).

  ┌────────────┐
  │ app_shared │
  └──┬──────┬──┘
     │      │
     │      │
     ▼      ▼
┌─────┐    ┌──────────┐
│ app │    │ skeleton │
└─────┘    └──────────┘

Thanks to app_shared, the templates for app and skeleton can contain only the files that are specific to them alone, and the rest is automatically kept in sync.