basic ECS spawner

addons/gecs/tests/systems/s_test_order_g.gd

@@ -0,0 +1,13 @@
+class_name S_TestOrderG
+extends System
+
+func deps():
+	return {Runs.After: [S_TestOrderE], Runs.Before: []}
+
+func query():
+	return ECS.world.query.with_all([C_TestOrderComponent])
+
+func process(entities: Array[Entity], components: Array, delta: float):
+	for entity in entities:
+		var c = entity.get_component(C_TestOrderComponent)
+		c.execution_log.append("G")