screen_brightness_ohos 2.1.2-dev.1

The ohos federated plugin implementation of screen_brightness.

2.1.2

• migrate to new project structure (only work after OHOS Flutter version 3.27.0)#71

2.1.2

• temporary revert migrate to new project structure #75

2.1.1

• migrate to new project structure #71

2.1.0

• initial release