refactor(slay-the-spire-like): rename depletion to consumedUses

Rename `depletion` to `consumedUses` in `GameItemMeta` to better reflect
its purpose. Update combat effect logic and tests to use the new field
name. Also apply consistent formatting and import organization to
combat effect modules.

tests/samples/slay-the-spire-like/combat/effects.test.ts

@@ -82,7 +82,7 @@ function createItem(
         description: "",
       },
       shape: { id: "1x1", cells: [{ x: 0, y: 0 }] } as unknown as ParsedShape,
-      depletion: costType === "uses" ? depletion : undefined,
+      consumedUses: costType === "uses" ? depletion : undefined,
     },
   };
 }
@@ -591,7 +591,7 @@ describe("combat/effects", () => {
 
       payCardCost(player, "uses", 3, "potion-1", inventory);
 
-      expect(item.meta?.depletion).toBe(4);
+      expect(item.meta?.consumedUses).toBe(4);
     });
 
     it("should do nothing for none cost card", () => {