Since godot is coming to mobile,put a pop up keyboard.

[Weirdpurplephantom]

I tried to use the app on my mobile phone but when it came to actually changing the code,i couldn't do anything

so i think it would be pretty neat if you'd add a pop up keyboard(doesn't have to be the systems keyboard if thats easier)

[NathanLovato]

This is a duplicate of #847 . I'll let you check that issue for details.