Cleans up salvage code a bit

src/main/java/net/knarcraft/blacksmith/property/SalvageMethod.java

@@ -0,0 +1,23 @@
+package net.knarcraft.blacksmith.property;
+
+/**
+ * A representation of the different ways an item can be salvaged
+ */
+public enum SalvageMethod {
+
+    /**
+     * Salvaging the item normally by returning the item's crafting recipe
+     */
+    SALVAGE,
+
+    /**
+     * Removing the armor trim from an item
+     */
+    ARMOR_TRIM,
+
+    /**
+     * Un-doing netherite application for an item
+     */
+    NETHERITE,
+
+}

src/main/java/net/knarcraft/blacksmith/property/SalvageState.java

@@ -0,0 +1,23 @@
+package net.knarcraft.blacksmith.property;
+
+/**
+ * The state of trying to find salvage for an item
+ */
+public enum SalvageState {
+
+    /**
+     * Found useful salvage that can be given to a player
+     */
+    FOUND_SALVAGE,
+
+    /**
+     * The item cannot be salvaged using the used method
+     */
+    INCORRECT_METHOD,
+
+    /**
+     * While the method was correct, no useful salvage was created
+     */
+    NO_SALVAGE,
+
+}