Initial 1.16 block work

- Add ancient debris
- Add basalt
- Add polished basalt
- Add soul campfire

overviewer_core/src/mc_id.h

@@ -260,6 +260,12 @@ enum mc_block_id {
     block_structure_block = 255,
     block_jigsaw = 256,
     block_shulker_box = 257,
+    // 1.16 stuff
+    block_ancient_debris = 1000,
+    block_basalt = 1001,
+    block_polished_basalt = 1002,
+    block_soul_campfire = 1003,
+
     block_prismarine_stairs = 11337,
     block_dark_prismarine_stairs = 11338,
     block_prismarine_brick_stairs = 11339,

overviewer_core/src/overviewer.h

@@ -31,7 +31,7 @@
 
 // increment this value if you've made a change to the c extension
 // and want to force users to rebuild
-#define OVERVIEWER_EXTENSION_VERSION 86
+#define OVERVIEWER_EXTENSION_VERSION 87
 
 #include <stdbool.h>
 #include <stdint.h>