Add audio bus configuration for various sound effects and update main scene reference

objects/ui/credits.tscn

@@ -0,0 +1,57 @@
+[gd_scene load_steps=3 format=3 uid="uid://bwgmrcyj4mvu"]
+
+[ext_resource type="Script" uid="uid://dtjgndehihl6d" path="res://scripts/ui/credits.gd" id="1_3aqj3"]
+
+[sub_resource type="StyleBoxFlat" id="StyleBoxFlat_g4ivv"]
+bg_color = Color(0, 0, 0, 1)
+
+[node name="Credits" type="Control"]
+layout_mode = 3
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+size_flags_horizontal = 6
+size_flags_vertical = 6
+script = ExtResource("1_3aqj3")
+
+[node name="PanelContainer" type="PanelContainer" parent="."]
+layout_mode = 1
+anchors_preset = 15
+anchor_right = 1.0
+anchor_bottom = 1.0
+grow_horizontal = 2
+grow_vertical = 2
+theme_override_styles/panel = SubResource("StyleBoxFlat_g4ivv")
+
+[node name="MarginContainer" type="MarginContainer" parent="PanelContainer"]
+layout_mode = 2
+theme_override_constants/margin_left = 8
+theme_override_constants/margin_top = 8
+theme_override_constants/margin_right = 8
+theme_override_constants/margin_bottom = 8
+
+[node name="VBoxContainer" type="VBoxContainer" parent="PanelContainer/MarginContainer"]
+layout_mode = 2
+theme_override_constants/separation = 32
+
+[node name="Pause" type="Label" parent="PanelContainer/MarginContainer/VBoxContainer"]
+layout_mode = 2
+text = "CREDITS"
+horizontal_alignment = 1
+vertical_alignment = 1
+uppercase = true
+
+[node name="RichTextLabel" type="RichTextLabel" parent="PanelContainer/MarginContainer/VBoxContainer"]
+layout_mode = 2
+size_flags_vertical = 3
+text = "Game was created by Gabriel Kaszewski.
+
+Main character was drawn by my girlfriend <3
+
+I would like to thank all of my friends that encouraged my during development of this game. 
+
+For now this is it, enjoy the game! 
+"
+fit_content = true