Apply dart autofixes

lib/nbt/NbtUtils.dart

@@ -111,9 +111,10 @@ class NbtUtils {
   }
 
   static UUID readUUID(CompoundTag tag, String name) {
-    if (!tag.contains(name))
+    if (!tag.contains(name)) {
       return UUID.ZERO;
-    else
+    } else {
       return _uuidFromIntArray(tag.get(name)!.asIntArray());
+    }
   }
 }

lib/nbt/SnbtIo.dart

@@ -0,0 +1 @@
+class SnbtIo {}

lib/nbt/Stream.dart

@@ -351,8 +351,9 @@ class ByteLayer {
       seek(position);
       int current = readUnsignedByte();
       return (current & mask) == mask;
-    } else
+    } else {
       return false;
+    }
   }
 
   int getBit(int position) {