added game client functionality

project/scenes/ui/testinterface.tscn

@@ -0,0 +1,29 @@
+[gd_scene load_steps=2 format=3 uid="uid://bsno04jv8uvxe"]
+
+[ext_resource type="Script" path="res://scripts/ui/testinterface.gd" id="1_g1tlq"]
+
+[node name="TestInterface" type="Control"]
+layout_mode = 3
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+script = ExtResource("1_g1tlq")
+
+[node name="Button" type="Button" parent="."]
+layout_mode = 1
+anchors_preset = 8
+anchor_left = 0.5
+anchor_top = 0.5
+anchor_right = 0.5
+anchor_bottom = 0.5
+offset_left = -108.5
+offset_top = -56.0
+offset_right = 108.5
+offset_bottom = 56.0
+grow_horizontal = 2
+grow_vertical = 2
+text = "Test websocket"
+
+[connection signal="pressed" from="Button" to="." method="_on_button_pressed"]