Remove util:lookup plugin

Behaviour moved into the api plugin.

game/plugin/api/src/definitions.kt

@@ -9,11 +9,45 @@ object Definitions {
         return ItemDefinition.lookup(id)
     }
 
+    fun item(name: String): ItemDefinition? {
+        return findEntity(ItemDefinition::getDefinitions, ItemDefinition::getName, name)
+    }
+
     fun obj(id: Int): ObjectDefinition? {
         return ObjectDefinition.lookup(id)
     }
 
+    fun obj(name: String): ObjectDefinition? {
+        return findEntity(ObjectDefinition::getDefinitions, ObjectDefinition::getName, name)
+    }
+
     fun npc(id: Int): NpcDefinition? {
         return NpcDefinition.lookup(id)
     }
+
+    fun npc(name: String): NpcDefinition? {
+        return findEntity(NpcDefinition::getDefinitions, NpcDefinition::getName, name)
+    }
+
+    /**
+     * The [Regex] used to match 'names' that have an id attached to the end.
+     */
+    private val ID_REGEX = Regex(".+_[0-9]+$")
+
+    private fun <T : Any> findEntity(
+        definitionsProvider: () -> Array<T>,
+        nameSupplier: T.() -> String,
+        name: String
+    ): T? {
+        val definitions = definitionsProvider.invoke()
+
+        if (ID_REGEX matches name) {
+            val id = name.substring(name.lastIndexOf('_') + 1, name.length).toInt()
+            return definitions.getOrNull(id)
+        }
+
+        val normalizedName = name.replace('_', ' ')
+        return definitions.firstOrNull { it.nameSupplier().equals(normalizedName, ignoreCase = true) }
+    }
+
 }