many small changes, and few big ones

levels/levels_def.gd

@@ -0,0 +1,19 @@
+extends Node
+
+const SCENES = {
+	"menu": "uid://bqmpoix37kutp",
+	"intro": "uid://c6w7lrydi43ts",
+	"test": "uid://dqf665b540tfg",
+}
+
+var ENTRYPOINTS = {
+	"intro_start": LevelsCore.Entrypoint.new(
+		"intro",
+		Vector2(-1440, 56),
+		false, Vector2.ZERO,
+		true),
+	"test": LevelsCore.Entrypoint.new(
+		"test",
+		Vector2(1680, 200),
+		false, Vector2(0, -500)),
+}