add 'number' uses display mode

src/content/ContentLoader.cpp

@@ -442,6 +442,8 @@ void ContentLoader::loadItem(
     root.at("uses-display").get(usesDisplayStr);
     if (usesDisplayStr == "none") {
         def.usesDisplay = ItemUsesDisplay::NONE;
+    } else if (usesDisplayStr == "number") {
+        def.usesDisplay = ItemUsesDisplay::NUMBER;
     } else if (usesDisplayStr == "relation") {
         def.usesDisplay = ItemUsesDisplay::RELATION;
     } else if (usesDisplayStr == "vbar") {

src/graphics/ui/elements/InventoryView.cpp

@@ -248,12 +248,14 @@ void SlotView::drawItemInfo(
         case ItemUsesDisplay::NONE:
             break;
         case ItemUsesDisplay::RELATION:
-            draw_shaded_text(
-                batch, font, std::to_wstring(uses), pos.x - 3, pos.y - 3
-            );
             draw_shaded_text(
                 batch, font, std::to_wstring(item.uses), pos.x - 3, pos.y + 9
             );
+            [[fallthrough]];
+        case ItemUsesDisplay::NUMBER:
+            draw_shaded_text(
+                batch, font, std::to_wstring(uses), pos.x - 3, pos.y - 3
+            );
             break;
         case ItemUsesDisplay::VBAR: {
             batch.untexture();

src/items/ItemDef.hpp

@@ -21,6 +21,7 @@ enum class ItemIconType {
 
 enum class ItemUsesDisplay {
     NONE,     // uses count is not displayed
+    NUMBER,   // uses count is displayed as number
     RELATION, // uses count is displayed as `remain/default` relation
     VBAR,     // uses count is displayed as vertical bar without counter
     DEFAULT = VBAR,