3861 [in_app_purchase] Android example using in_app_purchase_android package (cla: yes, p: in_app_purchase, platform-android)

3862 Temporarily disable Windows tests (cla: yes)

3863 Fix analyzer issues (cla: yes)

3864 Check in macOS example Podfiles (cla: yes, p: integration_test, p: path_provider, p: url_launcher, p: package_info, p: shared_preferences, p: connectivity, platform-macos)

3865 Simplify the tooling bash scripts (cla: yes, p: video_player)

3869 [image_picker]Fix the description (cla: yes, p: image_picker)