Added hook-lark.py and the required lines in setup.py

lark/__pyinstaller/__init__.py

@@ -0,0 +1,6 @@
+# For usage of lark with PyInstaller. See https://pyinstaller-sample-hook.readthedocs.io/en/latest/index.html
+
+import os
+
+def get_hook_dirs():
+    return [os.path.dirname(__file__)]

lark/__pyinstaller/hook-lark.py

@@ -0,0 +1,14 @@
+#-----------------------------------------------------------------------------
+# Copyright (c) 2017-2020, PyInstaller Development Team.
+#
+# Distributed under the terms of the GNU General Public License (version 2
+# or later) with exception for distributing the bootloader.
+#
+# The full license is in the file COPYING.txt, distributed with this software.
+#
+# SPDX-License-Identifier: (GPL-2.0-or-later WITH Bootloader-exception)
+#-----------------------------------------------------------------------------
+
+from PyInstaller.utils.hooks import collect_data_files
+
+datas = collect_data_files('lark')

setup.py

@@ -57,6 +57,10 @@ Main Features:
         "Topic :: Text Processing :: Linguistic",
         "License :: OSI Approved :: MIT License",
     ],
-
+    entry_points = {
+        'pyinstaller40': [
+            'hook-dirs = lark.__pyinstaller:get_hook_dirs'
+        ]
+    },
 )