Initial commit

Half-baked state. Most of the UI is mostly done, but the integration
with Grist (or any other data provider) is still missing.

addons/onscreenkeyboard/customize/styles/defaultBackgroundStyle.tres

@@ -0,0 +1,9 @@
+[gd_resource type="StyleBoxFlat" format=2]
+
+[resource]
+bg_color = Color( 0.137255, 0.137255, 0.137255, 1 )
+border_width_left = 5
+border_width_top = 5
+border_width_right = 5
+border_width_bottom = 5
+border_color = Color( 0.137255, 0.137255, 0.137255, 1 )