Replace references to NEU with Firmament

src/main/kotlin/moe/nea/firmament/rei/NEUItemEntrySerializer.kt

@@ -0,0 +1,25 @@
+package moe.nea.firmament.rei
+
+import io.github.moulberry.repo.data.NEUItem
+import me.shedaniel.rei.api.common.entry.EntrySerializer
+import me.shedaniel.rei.api.common.entry.EntryStack
+import net.minecraft.nbt.NbtCompound
+import moe.nea.firmament.repo.RepoManager
+import moe.nea.firmament.util.SkyblockId
+
+object NEUItemEntrySerializer : EntrySerializer<NEUItem?> {
+    const val SKYBLOCK_ID_ENTRY = "SKYBLOCK_ID"
+
+    override fun supportSaving(): Boolean = true
+    override fun supportReading(): Boolean = true
+
+    override fun read(tag: NbtCompound): NEUItem? {
+        return RepoManager.getNEUItem(SkyblockId(tag.getString(SKYBLOCK_ID_ENTRY)))
+    }
+
+    override fun save(entry: EntryStack<NEUItem?>, value: NEUItem?): NbtCompound {
+        return NbtCompound().apply {
+            putString(SKYBLOCK_ID_ENTRY, value?.skyblockItemId ?: "null")
+        }
+    }
+}