just to change from disabling spawn chunks to control over its size. Removes disableSpawnChunks, adds spawnChunksSize. Fixes #192

src/main/java/carpet/fakes/ChunkTicketManagerInterface.java

@@ -0,0 +1,12 @@
+package carpet.fakes;
+
+import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
+import net.minecraft.server.world.ChunkTicket;
+import net.minecraft.util.SortedArraySet;
+import net.minecraft.util.math.ChunkPos;
+
+public interface ChunkTicketManagerInterface
+{
+    void changeSpawnChunks(ChunkPos pos, int distance);
+    Long2ObjectOpenHashMap<SortedArraySet<ChunkTicket<?>>> getTicketsByPosition();
+}