Add keyboard incognito mode

[donateur]

Thanks for the great app! This is an enhancement request.

Expected behavior

Please add an option to disable the google keyboard (gboard) from learning words I use when using K9. See https://www.xda-developers.com/api-apps-keyboard-incognito-mode/ for an explanation. I believe the IME_FLAG_NO_PERSONALIZED_LEARNING API needs to be used.

Actual behavior

The google keyboard records all keystrokes/swipes in K-9.

Steps to reproduce

N/A This is an enhancement.

Environment

K-9 Mail version: 5.600

Android version: 9 (Pixel 3)

Account type (IMAP, POP3, WebDAV/Exchange): N/A

[michaelsam94]

I will work on this enhancement

[Meteor0id]

@michaelsam94 does not appear to have worked on this since Februari 2019. The pull request contains requested changes and has eventually been closed due to lack of input. If anyone want to pick this up go for it!

Here is the PR michaelsam94 authored.
#3895