Add 'engine/' from commit 'a8e37fc010'

git-subtree-dir: engine
git-subtree-mainline: b74841629e
git-subtree-split: a8e37fc010

engine/modules/gdscript/tests/scripts/parser/warnings/confusable_identifier.gd

@@ -0,0 +1,12 @@
+extends Node
+
+func test():
+	var port = 0 # Only latin characters.
+	var pοrt = 1 # The "ο" is Greek omicron.
+
+	prints(port, pοrt)
+
+# Do not call this since nodes aren't in the tree. It is just a parser check.
+func nodes():
+	var _node1 = $port # Only latin characters.
+	var _node2 = $pοrt # The "ο" is Greek omicron.