Add bullet creation and viewer dialogs with 2D/3D support

- Implement BulletCreatorDialog for configuring bullet parameters.
- Introduce BulletViewer to display bullets in a grid format.
- Add filtering options for 2D and 3D bullets in the viewer.
- Enhance WeaponCreatorDock to include bullet creation functionality.

addons/weapon_creator/WeaponCreatorDialog.gd

@@ -72,8 +72,9 @@ func _ready() -> void:
 	var action_text = "Duplicate" if not prefill_data.is_empty() else "Create New"
 	title = action_text + " Weapon (" + mode_text + ")"
 	size = Vector2i(750, 950)
-	transient = true
-	exclusive = true
+	transient = false
+	exclusive = false
+	unresizable = false
 	
 	# Connect close request (X button) to cancel action
 	close_requested.connect(_on_cancel_pressed)
@@ -243,6 +244,7 @@ func _build_sprite_selector(parent: Control) -> void:
 	sprite_picker.editable = true
 	sprite_picker.size_flags_horizontal = Control.SIZE_EXPAND_FILL
 	sprite_picker.resource_changed.connect(_on_sprite_resource_changed)
+	sprite_picker.resource_selected.connect(_on_resource_picker_opening)
 	picker_hbox.add_child(sprite_picker)
 	
 	# Setup editor integration if interface is available
@@ -261,7 +263,6 @@ func _build_sprite_selector(parent: Control) -> void:
 	preview_container.add_child(sprite_preview)
 
 func _on_sprite_resource_changed(resource: Resource) -> void:
-	# Update sprite resource and preview when changed via EditorResourcePicker
 	if resource is Texture2D:
 		sprite_resource = resource
 		sprite_preview.texture = resource
@@ -272,6 +273,18 @@ func _on_sprite_resource_changed(resource: Resource) -> void:
 		print("Sprite resource cleared")
 	else:
 		push_warning("Selected resource is not a Texture2D")
+	
+	# Restore window focus after resource picker closes
+	call_deferred("_restore_window_focus")
+
+func _on_resource_picker_opening(_resource: Resource, _inspect: bool) -> void:
+	# Called when resource picker button is clicked
+	pass
+
+func _restore_window_focus() -> void:
+	# Bring window back to front after file picker closes
+	if visible:
+		move_to_foreground()
 
 func _setup_sprite_picker() -> void:
 	# Ensure sprite picker is properly integrated with editor