gd: added input addon

addons/guide/ui/renderers/misc/fallback_renderer.gd

@@ -0,0 +1,11 @@
+@tool
+extends GUIDEIconRenderer
+
+func supports(input:GUIDEInput) -> bool:
+	return true
+	
+func render(input:GUIDEInput) -> void:
+	pass
+ 
+func cache_key(input:GUIDEInput) -> String:
+	return "2e130e8b-d5b3-478c-af65-53415adfd6bb"  # we only have one output, so same cache key