Adds some various php files

lib/Settings.dart

@@ -0,0 +1,23 @@
+import 'package:libac_flutter/nbt/impl/CompoundTag.dart';
+
+class Settings {
+  static Settings? _inst = null;
+  Settings._() {}
+
+  factory Settings() {
+    if (Settings._inst != null)
+      return Settings._inst!;
+    else {
+      Settings._inst = Settings._();
+      return Settings._inst!;
+    }
+  }
+
+  static void Load(CompoundTag tag) {}
+
+  static CompoundTag save() {
+    CompoundTag tag = CompoundTag();
+
+    return tag;
+  }
+}