Add Bedrock v42 interface (#434)

Author: gentlegiantJGC

amulet/level/formats/leveldb_world/interface/chunk/leveldb_42.py

@@ -0,0 +1,15 @@
+from __future__ import annotations
+
+from .leveldb_41 import (
+    LevelDB41Interface as ParentInterface,
+)
+
+
+class LevelDB42Interface(ParentInterface):
+    chunk_version = 42
+
+    def __init__(self):
+        super().__init__()
+
+
+export = LevelDB42Interface

amulet/level/formats/leveldb_world/interface/chunk/leveldb_chunk_versions.py

@@ -50,7 +50,8 @@
     # continue without experimental gameplay
     39: ((1, 18, 0, 0), (1, 18, 29, 999)),
     40: ((1, 18, 30, 0), (1, 21, 31, 999)),
-    41: ((1, 21, 40, 0), (999, 999, 999, 999)),
+    41: ((1, 21, 40, 0), (1, 21, 139, 999)),
+    42: ((1, 21, 120, 0), (999, 999, 999, 999)),
 }  # TODO: fill this list with the actual last game version number each chunk version was last used in