Windows package identifiers are globally unique strings, typically a
GUID. These are required for templates that require a Windows package
name as described in
https://docs.microsoft.com/en-us/windows/win32/appxpkg/appx-portal

Fixes https://github.com/flutter/flutter/issues/82587

* opt out the flutter tool

* oops EOF

* fix import

* Update tool_backend.dart

* Update daemon_client.dart

* fix more

[flutter_tools] update message for `flutter create -t plugin` when no `--platforms` specified (#71962)

[flutter_tools] Display "no platforms" message based on results when creating plugins project (#70215)

The tool observes a large number of unhandled exceptions during the file copy portion of flutter create. it is difficult to tell whether the permission issue is caused by the source/destination, or whether it is due to a bug in dart:io.

To work around this, implement a permission check for both the source and dest files. If either fails, the tool can exit with a more specific message.

If these checks pass, then perform the actual copy. If the copy fails, fallback to manually copying the bytes

According to https://dart.dev/tools/pub/pubspec#name , uppercase is not permitted for package names.

Remove flutter create --with-driver-test . Fixes #64095