Add namespace

Adds a globally unique namespace `GDXterm` that can be used to
conveniently access scripts.

addons/godot_xterm/namespace.gd

@@ -0,0 +1,5 @@
+class_name GDXterm
+
+const Terminal := preload("./nodes/terminal/terminal.gd")
+const PTYUnix := preload("./nodes/pty/unix/pty_unix.gd")
+const TPut := preload("./util/tput.gd")

examples/menu/menu.gd

@@ -8,8 +8,6 @@ extends Control
 # - https://tldp.org/HOWTO/Bash-Prompt-HOWTO/x361.html
 # - https://www.youtube.com/watch?v=jTSQlIK_92w
 
-const TPut := preload("res://addons/godot_xterm/util/tput.gd")
-
 # Title generated using command: toilet -f pagga GODOT XTERM
 const TITLE = """
 ░█▀▀░█▀█░█▀▄░█▀█░▀█▀░░░█░█░▀█▀░█▀▀░█▀▄░█▄█\r
@@ -38,7 +36,7 @@ var row: int
 var menu_start_row: int
 var offset: int
 
-onready var tput = TPut.new($Terminal)
+onready var tput = GDXterm.TPut.new($Terminal)
 
 
 func _ready():
@@ -105,10 +103,10 @@ func draw_menu():
 
 func _on_Terminal_key_pressed(data: String, event: InputEventKey) -> void:
 	match data:
-		TPut.CURSOR_UP:  # Up arrow key
+		tput.CURSOR_UP:  # Up arrow key
 			selected_index = int(clamp(selected_index - 1, 0, menu_items.size() - 1))
 			draw_menu()
-		TPut.CURSOR_DOWN:  # Down arrow key
+		tput.CURSOR_DOWN:  # Down arrow key
 			selected_index = int(clamp(selected_index + 1, 0, menu_items.size() - 1))
 			draw_menu()
 		"1":

examples/terminal/terminal.gd

@@ -1,4 +1,4 @@
-extends "res://addons/godot_xterm/nodes/terminal/terminal.gd"
+extends GDXterm.Terminal
 
 onready var pty = $PTY
 

project.godot

@@ -8,6 +8,16 @@
 
 config_version=4
 
+_global_script_classes=[ {
+"base": "Reference",
+"class": "GDXterm",
+"language": "GDScript",
+"path": "res://addons/godot_xterm/namespace.gd"
+} ]
+_global_script_class_icons={
+"GDXterm": ""
+}
+
 [application]
 
 config/name="Godot Xterm"
@@ -20,7 +30,7 @@ window/vsync/use_vsync=false
 
 [editor_plugins]
 
-enabled=PoolStringArray( "res://addons/godot_xterm/plugin.cfg", "res://addons/gut/plugin.cfg" )
+enabled=PoolStringArray( "res://addons/godot_xterm/plugin.cfg" )
 
 [rendering]