created basic building class

started building groups
temp ui placed
#11 #13 #6

data/buildings/corruptor.tres

@@ -0,0 +1,10 @@
+[gd_resource type="Resource" script_class="Building" load_steps=2 format=3 uid="uid://bgwoy0uh2cpvu"]
+
+[ext_resource type="Script" path="res://scripts/building.gd" id="1_ssts7"]
+
+[resource]
+script = ExtResource("1_ssts7")
+atlas_texture_region = Vector2i(0, 0)
+name = ""
+description = ""
+cost = {}