3873 [image_picker] Image picker fix metadata (cla: yes, p: image_picker, platform-ios)

3881 [image_picker] Image picker fix alert (cla: yes, waiting for tree to go green, p: image_picker, platform-ios)

3898 [image_picker] Image picker fix camera device (cla: yes, waiting for tree to go green, p: image_picker, platform-ios)

3915 [image_picker] Migrate maven repo from jcenter to mavenCentral (cla: yes, waiting for tree to go green, p: image_picker, platform-android)