feat: add ItemMeta#asColorable

idofront-util/src/main/kotlin/com/mineinabyss/idofront/items/ItemMetas.kt

@@ -0,0 +1,45 @@
+package com.mineinabyss.idofront.items
+
+import org.bukkit.Color
+import org.bukkit.inventory.meta.FireworkEffectMeta
+import org.bukkit.inventory.meta.ItemMeta
+import org.bukkit.inventory.meta.LeatherArmorMeta
+import org.bukkit.inventory.meta.MapMeta
+import org.bukkit.inventory.meta.PotionMeta
+
+interface Colorable {
+    var color: Color?
+}
+
+/**
+ * These different ItemMeta classes don't share a common color property so we use this :(
+ */
+fun ItemMeta.asColorable(): Colorable? {
+    return when (val meta = this) {
+        is LeatherArmorMeta -> object : Colorable {
+            override var color: Color?
+                get() = meta.color
+                set(value) {
+                    meta.setColor(value)
+                }
+        }
+
+        is PotionMeta -> object : Colorable {
+            override var color: Color?
+                get() = meta.color
+                set(value) {
+                    meta.color = value
+                }
+        }
+
+        is MapMeta -> object : Colorable {
+            override var color: Color?
+                get() = meta.color
+                set(value) {
+                    meta.color = value
+                }
+        }
+
+        else -> null
+    }
+}