[accessibility] VoiceOver/Talkback support

[ericdallo]

Is your feature request related to a problem?

Currently, to test accessibility using VoiceOver/TalkBack we need to test it on a emulator/real device :/

Describe the feature you'd like

I was wondering how hard would be to create a hover go plugin that emulate the android VoiceOver/talkback on hover.

[pchampio]

Go flutter doesn't support accessibility; the flutter accessibility is handled through a plugin, and currently, we are silencing it: https://github.com/go-flutter-desktop/go-flutter/blob/master/accessibility.go

I don't know how accessibility works on android/ios to give you an implementation difficulty estimation.

Android impl: https://github.com/flutter/engine/blob/fff415d517d641a9e750d4a2c7e643262e130068/shell/platform/android/io/flutter/embedding/engine/systemchannels/AccessibilityChannel.java