mouse: add more libinput settings

[johanmalm]

This is a continuation of #144

[johanmalm]

I think it's ready to go now.

Did change the pointer-speed knob to a QSlider to avoid speed reading 0 which just seemed a bit odd.

[stefonarch]

Looks good, thanks for the overhaul.
The QSlider is nice, didn't think of using it.

[johanmalm]

Well, thank you for kicking it off.

[stefonarch]

I forgot: do you update translations or shall I make a PR?

[johanmalm]

I forgot: do you update translations or shall I make a PR?

Yeah. Or teach me how to do it.

[stefonarch]

I have to remember it too here.
Usually steps are:

1. In weblate commit all pending changes and eventually lock translations
2. Merge translation PR
3. Update translations, check, push and merge them:
   /usr/lib/qt6/bin/lupdate -no-obsolete src/ -ts data/translations/*.ts
4. Unlock translations if they were locked

2. is done and 1) too now. And 3) too.
   Will make a PR later.

[stefonarch]

Added the command up here.
For LXQt I'm using a script which basically does anything, I'll add it here.
update-translations.txt

[johanmalm]

We have the file bin/lxqt-transupdate in the repo. It was redtide who added it.
Could I use that one?

https://github.com/labwc/labwc-tweaks/blob/master/bin/lxqt-transupdate