some restructuring

Classes/GroupMetadata.gd

@@ -4,3 +4,4 @@ class_name GroupMetadata
 @export var icon_path: String
 @export var description: String
 @export var installs: Array[InstallMetadata]
+@export var settings_overrides: Dictionary

UI/Components/GroupMenu.gd

@@ -38,8 +38,9 @@ func _ready() -> void:
 	header_text_label.gui_input.connect(_on_header_text_label_gui_input)
 
 
-func add(item: InstallItem) -> void:
+func add(item: InstallItem) -> int:
 	child_container.add_child(item)
+	return child_container.get_child_count()
 
 
 func free_item(at_idx: int) -> void:

UI/Components/InstallItem.tscn

@@ -4,7 +4,6 @@
 [ext_resource type="Texture2D" uid="uid://de57eeeobflp4" path="res://icon.svg" id="1_wwvlr"]
 
 [node name="InstallItem" type="HBoxContainer"]
-anchors_preset = -1
 offset_right = 299.0
 offset_bottom = 32.0
 script = ExtResource("1_sh2ev")