adding support for equipment inventories as well as horse and pillager item inventories.

src/main/java/carpet/fakes/InventoryBearerInterface.java

@@ -0,0 +1,8 @@
+package carpet.fakes;
+
+import net.minecraft.inventory.Inventory;
+
+public interface InventoryBearerInterface
+{
+    Inventory getCMInventory();
+}