Touch screen pans and zooms on canvas by using drag and pinch

[jacketsj]

Useful for devices with separate active touch pens and touch screens.

[m-GDEV]

Any interest in merging this?

I was looking into using Lorien but without touch screen support its hard to use it with my 2-in-1.

I'm not familiar with Godot so I can't easily build this myself to test it. This seems like a good feature to have.

[ZeroKun265]

I don't have a touchscreen nor a 2 in 1 but it shouldn't be too hard to test yourself since you have one, just clone the repo (not the official one, but the one from the pr), open in godot and export, if i can remember to i'll make a guide to export in a while, if i don't remember to.. feel free to tag me to remind me to do so, this way you can test it on your device haha

[m-GDEV]

Since I left that comments I've learned how to use godot 😅

I believe this PR still uses godot 3 while the main branch has updated to godot 4.

I might try porting this PR and opening a new PR