"Shell" interface

- Created a new hidden "shell" interface. This was initially created for testing the new localization settings but can easily be extended for other purposes.

project/src/GameScreen.gd

@@ -0,0 +1,20 @@
+extends Node2D
+
+onready var shell = $Shell
+onready var cmdl = $Shell/RefRect/HSplit/CmdLine
+onready var cmdl_exit_btn = $Shell/RefRect/HSplit/ExitBtn
+
+func _process(delta):
+	cmd_interface()
+	
+func cmd_interface():
+	if Input.is_action_pressed("ui_test"):
+		shell.show()
+	
+	if cmdl_exit_btn.pressed:
+		shell.hide()	
+	
+	if cmdl.text == "lang sv" and Input.is_key_pressed(KEY_ENTER):
+		TranslationServer.set_locale("sv")
+	elif cmdl.text == "lang en" and Input.is_key_pressed(KEY_ENTER):
+		TranslationServer.set_locale("en")