Emulating external keyboard for iPad

I'd like to make my laptop's keyboard behave like an external keyboard for my iPad, using exclusively a Bluetooth connection and no additional or specialized hardware. I want to be able to enable/disable such behavior as needed (e.g. though a keyboard shortcut).

Is a software solution possible for such a scenario? Based on my understanding, I need to emulate a HID device but don't know whether that's feasible or not.

All the solutions I found so far are outdated and I'm really out of ideas

I own a ThinkPad T480s running Arch Linux. Any way to find out whether my hardware is capable of that?