WIP checkpoint: Research and design GDScript sandboxing approach

sandbox_probe/probe.gd

@@ -68,8 +68,6 @@ func probe_engine_apis():
 	print("Node.new() = ", node)
 	# Can we access ProjectSettings?
 	print("ProjectSettings.get_setting('application/config/name') = ", ProjectSettings.get_setting("application/config/name"))
-	# Can we access the OS shell / clipboard?
-	print("OS.get_clipboard() = ", OS.get_clipboard())
 	# Can we access the filesystem directory listing?
 	var dir = DirAccess.open("/")
 	print("DirAccess.open('/') = ", dir)

sandbox_probe/project.godot

@@ -1,5 +1,8 @@
-[gd_scene load_steps=2 format=3]
+; Engine configuration file.
+config_version=5
 
-[ext_resource path="res://probe.gd" type="Script" id=1]
+[application]
 
-[node name="probe" type="SceneTree"]
+config/name="sandbox_probe"
+run/main_scene=""
+config/features=PackedStringArray("4.6")