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/plugin_node.gd

@@ -0,0 +1,17 @@
+@tool
+extends EditorPlugin
+
+func _enter_tree():
+	# Initialization of the plugin goes here
+	# Add the new type with a name, a parent type, a script and an icon
+	add_custom_type(
+		"OnscreenKeyboard", 
+		"PanelContainer",
+		preload("onscreen_keyboard.gd"),
+		preload("icon.png")
+	)
+
+func _exit_tree():
+	# Clean-up of the plugin goes here
+	# Always remember to remove it from the engine when deactivated
+	remove_custom_type("OnscreenKeyboard")