Added first setup of level-based system

Level2/wave2.tres

@@ -0,0 +1,13 @@
+[gd_resource type="Resource" script_class="WaveConfig" format=3 uid="uid://dafixx8vfmr3h"]
+
+[ext_resource type="Script" uid="uid://cbwxa2a4hfcy4" path="res://Scripts/Resources/enemy.gd" id="1_rhace"]
+[ext_resource type="Script" uid="uid://bp6q371iypd06" path="res://Scripts/wave_config.gd" id="2_l5n6q"]
+[ext_resource type="Resource" uid="uid://bffhb5krs5elm" path="res://Enemies/Crystalisk/crystalisk.tres" id="2_n5glm"]
+
+[resource]
+script = ExtResource("2_l5n6q")
+enemies = Dictionary[ExtResource("1_rhace"), int]({
+ExtResource("2_n5glm"): 6
+})
+new_shop = true
+metadata/_custom_type_script = "uid://bp6q371iypd06"