major rework on pickups, hud now shows the number and icon of pickup

assets/pickup_item_indicator.tscn

@@ -0,0 +1,46 @@
+[gd_scene load_steps=4 format=3 uid="uid://x3uwmwbobkoy"]
+
+[ext_resource type="Script" path="res://scripts/pickup_item_indicator.gd" id="1_3ji4d"]
+[ext_resource type="Texture2D" uid="uid://cmnhd40dvn3l3" path="res://assets/Textures/ObjectTextures/rocket.png" id="1_xksdo"]
+[ext_resource type="Theme" uid="uid://buma708jpxqrn" path="res://Clean_theme.tres" id="3_etc64"]
+
+[node name="PickupItemIndicator" type="Control"]
+z_index = -1
+layout_mode = 3
+anchors_preset = 0
+offset_right = 250.0
+offset_bottom = 250.0
+script = ExtResource("1_3ji4d")
+
+[node name="image" type="TextureRect" parent="."]
+layout_mode = 2
+offset_left = -226.0
+offset_top = -131.0
+offset_right = 286.0
+offset_bottom = 381.0
+grow_horizontal = 2
+grow_vertical = 2
+size_flags_horizontal = 4
+size_flags_vertical = 4
+texture = ExtResource("1_xksdo")
+
+[node name="Label" type="Label" parent="image"]
+layout_mode = 1
+anchors_preset = 8
+anchor_left = 0.5
+anchor_top = 0.5
+anchor_right = 0.5
+anchor_bottom = 0.5
+offset_left = -100.0
+offset_top = -42.0
+offset_right = 86.0
+offset_bottom = 63.0
+grow_horizontal = 2
+grow_vertical = 2
+size_flags_horizontal = 4
+theme = ExtResource("3_etc64")
+theme_override_colors/font_outline_color = Color(0, 0, 0, 1)
+theme_override_constants/outline_size = 19
+theme_override_font_sizes/font_size = 100
+text = "999"
+horizontal_alignment = 1