Replace references to NEU with Firmament

src/main/kotlin/moe/nea/firmament/util/ItemUtil.kt

@@ -0,0 +1,24 @@
+package moe.nea.firmament.util
+
+import net.minecraft.item.ItemStack
+import net.minecraft.nbt.NbtCompound
+import net.minecraft.nbt.NbtList
+import net.minecraft.nbt.NbtString
+import net.minecraft.text.Text
+
+
+fun ItemStack.appendLore(args: List<Text>) {
+    val compoundTag = getOrCreateSubNbt("display")
+    val loreList = compoundTag.getOrCreateList("Lore", NbtString.STRING_TYPE)
+    for (arg in args) {
+        loreList.add(NbtString.of(Text.Serializer.toJson(arg)))
+    }
+}
+
+fun NbtCompound.getOrCreateList(label: String, tag: Byte): NbtList = getList(label, tag.toInt()).also {
+    put(label, it)
+}
+
+fun NbtCompound.getOrCreateCompoundTag(label: String): NbtCompound = getCompound(label).also {
+    put(label, it)
+}