added notification for picking up card

Scenes/UI/pickup_notification.tscn

@@ -0,0 +1,45 @@
+[gd_scene load_steps=3 format=3 uid="uid://chnj376d3lcjd"]
+
+[ext_resource type="Script" path="res://Scripts/pickup_notification.gd" id="1_cgy5u"]
+
+[sub_resource type="StyleBoxFlat" id="StyleBoxFlat_cdnv4"]
+resource_local_to_scene = true
+content_margin_left = 7.0
+content_margin_top = 3.0
+content_margin_right = 7.0
+content_margin_bottom = 3.0
+bg_color = Color(0.717647, 0.0941176, 0.392157, 0.784314)
+corner_radius_top_left = 15
+corner_radius_top_right = 15
+corner_radius_bottom_right = 15
+corner_radius_bottom_left = 2
+
+[node name="PanelContainer" type="PanelContainer"]
+script = ExtResource("1_cgy5u")
+fade_out_time = 2.0
+style = SubResource("StyleBoxFlat_cdnv4")
+text_style = Color(0, 0, 0, 0.862745)
+common_background = Color(1, 1, 1, 0.784314)
+uncommon_background = Color(0.196078, 0.8, 0.141176, 0.784314)
+rare_background = Color(0.141176, 0.231373, 0.8, 0.784314)
+epic_background = Color(0.709804, 0.141176, 0.8, 0.784314)
+legendary_background = Color(0.882353, 0.478431, 0.117647, 0.784314)
+
+[node name="HBoxContainer" type="HBoxContainer" parent="."]
+layout_mode = 2
+
+[node name="Label2" type="Label" parent="HBoxContainer"]
+layout_mode = 2
+text = "+1"
+
+[node name="Label" type="Label" parent="HBoxContainer"]
+layout_mode = 2
+size_flags_horizontal = 3
+text = "Rocket Launcher 50"
+horizontal_alignment = 1
+vertical_alignment = 1
+
+[node name="Timer" type="Timer" parent="."]
+one_shot = true
+
+[connection signal="timeout" from="Timer" to="." method="_on_timer_timeout"]