Rename ship/station scrap drop entities to "debris"

src/lib/eventsystem/event/DebrisSelectionChangedEvent.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <vector>
+
+#include "entt/entity/entity.hpp"
+
+#include "Event.h"
+
+// The set of currently selected debris (REQ-UI-DEBRIS-CLICK-SELECT,
+// REQ-UI-DEBRIS-MULTI-SELECT). An empty list means no debris is selected. Debris forms
+// its own selection category, mutually exclusive with buildings and entities.
+class DebrisSelectionChangedEvent : public Event
+{
+public:
+    explicit DebrisSelectionChangedEvent(std::vector<entt::entity> debris)
+        : debris(std::move(debris)) {}
+    const std::vector<entt::entity> debris;
+};

src/lib/eventsystem/event/ScrapSelectionChangedEvent.h

@@ -1,18 +0,0 @@
-#pragma once
-
-#include <vector>
-
-#include "entt/entity/entity.hpp"
-
-#include "Event.h"
-
-// The set of currently selected scrap piles (REQ-UI-SCRAP-CLICK-SELECT,
-// REQ-UI-SCRAP-MULTI-SELECT). An empty list means no scrap is selected. Scrap forms
-// its own selection category, mutually exclusive with buildings and entities.
-class ScrapSelectionChangedEvent : public Event
-{
-public:
-    explicit ScrapSelectionChangedEvent(std::vector<entt::entity> scrap)
-        : scrap(std::move(scrap)) {}
-    const std::vector<entt::entity> scrap;
-};