More Enchantment API

Co-authored-by: Luis <luisc99@icloud.com>
Co-authored-by: Janet Blackquill <uhhadd@gmail.com>

paper-api/src/main/java/io/papermc/paper/enchantments/EnchantmentRarity.java

@@ -0,0 +1,28 @@
+package io.papermc.paper.enchantments;
+
+/**
+ * @deprecated Enchantments do not have a "rarity" since 1.20.5
+ */
+@Deprecated(forRemoval = true, since = "1.20.5")
+public enum EnchantmentRarity {
+
+    COMMON(10),
+    UNCOMMON(5),
+    RARE(2),
+    VERY_RARE(1);
+
+    private final int weight;
+
+    EnchantmentRarity(int weight) {
+        this.weight = weight;
+    }
+
+    /**
+     * Gets the weight for the rarity.
+     *
+     * @return the weight
+     */
+    public int getWeight() {
+        return weight;
+    }
+}