Added title screen and onboarding prompt

scenes/title_screen.tscn

@@ -0,0 +1,55 @@
+[gd_scene load_steps=3 format=3]
+
+[ext_resource type="Script" path="res://scenes/title_screen.gd" id="1"]
+
+[sub_resource type="StyleBoxFlat" id="CardStyle"]
+bg_color = Color(0.05, 0.18, 0.05, 1)
+border_width_left = 3
+border_width_top = 3
+border_width_right = 3
+border_width_bottom = 3
+border_color = Color(0.2, 1, 0.2, 1)
+corner_radius_top_left = 6
+corner_radius_top_right = 6
+corner_radius_bottom_right = 6
+corner_radius_bottom_left = 6
+
+[node name="TitleScreen" type="CanvasLayer"]
+layer = 20
+process_mode = 3
+script = ExtResource("1")
+
+[node name="Dim" type="ColorRect" parent="."]
+anchor_right = 1.0
+anchor_bottom = 1.0
+mouse_filter = 2
+color = Color(0, 0, 0, 0.85)
+
+[node name="Center" type="CenterContainer" parent="."]
+anchor_right = 1.0
+anchor_bottom = 1.0
+mouse_filter = 1
+
+[node name="Card" type="PanelContainer" parent="Center"]
+theme_override_styles/panel = SubResource("CardStyle")
+
+[node name="Margin" type="MarginContainer" parent="Center/Card"]
+theme_override_constants/margin_left = 64
+theme_override_constants/margin_right = 64
+theme_override_constants/margin_top = 48
+theme_override_constants/margin_bottom = 48
+
+[node name="Column" type="VBoxContainer" parent="Center/Card/Margin"]
+theme_override_constants/separation = 24
+
+[node name="Title" type="Label" parent="Center/Card/Margin/Column"]
+text = "ELEVATOR"
+horizontal_alignment = 1
+theme_override_colors/font_color = Color(0.2, 1, 0.2, 1)
+theme_override_font_sizes/font_size = 72
+
+[node name="Prompt" type="Label" parent="Center/Card/Margin/Column"]
+text = "PRESS SPACE TO START"
+horizontal_alignment = 1
+theme_override_colors/font_color = Color(0.5, 1, 0.5, 1)
+theme_override_font_sizes/font_size = 28