Add "Red underline to mark misspelled words"

[dnisbetjones]

A simple spellcheck/red underline to show misspelled words would be just dandy. Thanks!

[LorenDB]

I'm on it!

(Actually I've been on it for a few hours already 😉)

[LorenDB]

It looks like QML is not conducive to spell checking, so this will probably go on hold until QML can be better spell-checked.

[deepbluev7]

Well, maybe Sonnet could help here: https://invent.kde.org/frameworks/sonnet

But I don't see, that they support Qml either.

[LorenDB]

Well, (recites in a monotone) the problem is that the underlying TextDocement may not be modified.

This is a really annoying part of Qt.

[deepbluev7]

Here is how NeoChat does it: https://invent.kde.org/network/neochat/-/commit/8f309ca958fcf8ebfe5b4e35539f67811e44700f

[squid-f]

Here is how NeoChat does it: https://invent.kde.org/network/neochat/-/commit/8f309ca958fcf8ebfe5b4e35539f67811e44700f

HI. Can it be merged, in a way, with Nheko code?