use KMM to write a flutter plugin

The reference plugin_codelab example plugin that accompanies the How to write a Flutter plugin codelab.

I changed plugin_codelab to a flutter plugin that write with kmm.

How to run:

Android: run shared/plugin_codelab/example/android

iOS:

1、build shared.framework

use ./gradlew releaseIOSFramework
or use new version Android Studio sync

2、run shared/plugin_codelab/example/ios

Tips: before run，shared/build/cocoapods/framework/shared.framework should be generated. The shared.h header file shared/build/cocoapods/framework/shared.framework/Headers/shared.h is generated.

了解更多请查看博文Kotlin/Native 用KMM写Flutter插件