I haven't tried this yet but I'll subscribe and give it a go. Thanks for uploading!
(You kids out there, you might think autorun is a joke, but use it now! 35 years of gaming and you'll want autorun in lots of stuff. Skyrim on console with a controller for thousands of hours is probably gonna permanently affect my left thumb's lifespan.)

The fix for Death Row Lemon's problem is to make sure the keybind does not conflict at all - even without considering modifier keys - with movement controls.

For example, if your forward key is W, then having AutoRun bound to Shift+W will cause this issue. I bound my AutoRun key to J and it works fine now.

This mod works perfectly.
Latest arma3 and kp_liberation

The mod doesn't work properly. I press the key combination and my character will walk a few meters and then stop. Probably cause the mod hasn't been updated in a long time but I'm not sure.