refactor: migrate to federated architecture

packages/flutter_blue_plus_platform_interface/.gitignore

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+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+migrate_working_dir/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+# Libraries should not include pubspec.lock, per https://dart.dev/guides/libraries/private-files#pubspeclock.
+/pubspec.lock
+**/doc/api/
+.dart_tool/
+build/

packages/flutter_blue_plus_platform_interface/.metadata

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+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: "b864805a681ae6bb7d7f6cafb7a5a21489819bcf"
+  channel: "beta"
+
+project_type: package

packages/flutter_blue_plus_platform_interface/CHANGELOG.md

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+## 1.0.0
+
+* Initial release.

packages/flutter_blue_plus_platform_interface/LICENSE

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+Copyright 2017-2024, Charles Weinberger & Thomas Clark.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Buffalo PC Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

packages/flutter_blue_plus_platform_interface/README.md

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+# flutter_blue_plus_platform_interface
+
+A common platform interface for the [`flutter_blue_plus`][1] plugin.
+
+This interface allows platform-specific implementations of the `flutter_blue_plus`
+plugin, as well as the plugin itself, to ensure they are supporting the
+same interface.
+
+# Usage
+
+To implement a new platform-specific implementation of `flutter_blue_plus`, extend
+[`FlutterBluePlusPlatform`][2] with an implementation that performs the
+platform-specific behavior, and when you register your plugin, set the default
+`FlutterBluePlusPlatform` by calling
+`FlutterBluePlusPlatform.instance = MyPlatformFlutterBluePlus()`.
+
+[1]: ../flutter_blue_plus
+[2]: lib/flutter_blue_plus_platform_interface.dart

packages/flutter_blue_plus_platform_interface/lib/flutter_blue_plus_platform_interface.dart

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+export 'src/platform_interface/flutter_blue_plus_platform.dart';