Loïc Sharma e7a1b68086
[SwiftPM] Add separate feature flag for the app migration (#158897)
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### Overview

This splits the Swift Package Manager feature in two:

1. **SwiftPM feature**: This builds plugins using SwiftPM (if the app
supports it), and, uses the new app & plugin templates that support
SwiftPM
2. **SwiftPM app migration feature**: this updates an existing Flutter
iOS or macOS app to support Swift Package Manager. This feature requires
the SwiftPM feature - if SwiftPM is off, the app migration is also off.

For now, both features are off by default. We plan to turn on the first
feature in the next stable release. The app migration feature will be
stay off by default until we have higher confidence in the migration.

See this mini design doc:
https://github.com/flutter/flutter/issues/151567#issuecomment-2455941279

Here's the PR that updates the SwiftPM docs:
https://github.com/flutter/website/pull/11495

Part of https://github.com/flutter/flutter/issues/151567

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Co-authored-by: Andrew Kolos <andrewrkolos@gmail.com>
2025-01-07 19:46:03 +00:00
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