add set_ime_editor_info

[jb55]

This builds on top of:

• Update to GameActivity 4.0.0 #191

The commit in this PR is:

• jb55/android-activity@set_ime_editor_info^...set_ime_editor_info

This adds support for GameActivity_setImeEditorInfo which is needed for setting various IME hints, such as multiline.

I'm currently using this in my egui/winit fork for mapping a new Multiline ImePurpose to ime editor options:

• damus-io/winit@eaff639

This ensures that the enter action button doesn't close the keyboard, it instead enters a newline.

[nicoburns]

@jb55 What is the status of this PR? (I see it is still marked as a draft). I believe that the ability to set the action_id using this API (which isn't here, but looks like it'd be quite easy to add) + the ability to hook into the onEditorAction event (https://stackoverflow.com/questions/2004344/how-do-i-handle-imeoptions-done-button-click) are what I need in order to properly handle the "enter key" on android soft keyboard.

[jb55]

we're using it in https://github.com/damus-io/notedeck, i guess I can mark it as ready.

[rib]

Cool, thanks for looking at this. I've recently worked on exposing the editor actions via a TextAction event + fixing a panic that can come from soft keyboard visibility changes (due to APP_CMD_SOFTWARE_KB_VIS_CHANGED not being handled).

With these I've also got IME support working with winit 0.30 + egui.

Skimming this PR, I might just tweak the flags + bitmasks to be hex values since I find it a bit odd seeing these in decimal (just a pedantic personal preference I suppose)