Update IME/soft keyboard braches for more recent versions of egui/winit

[jb55]

In

• https://github.com/damus-io/android/issues/74

We are using a fairly old builds of egui/winit (v0.22)

Lucas has a updated branches for v0.26 (see comment here):

• Android softkeyboard support #199

Let's first try to update agdk-eframe demo to latest IME branches from lucas:

• https://github.com/damus-io/android/issues/77

After that, we should really try to update the ime branches for 0.27 or master and get it working on the demo:

• Rebase IME/keyboard egui/winit branches onto v0.27.x #188

Once this is done we can look into using them in damus-android, starting with:

• Android build files #189