Add missing __init__.py files to botorch_community modules (#2910)

Summary:
Resolves the issue reported in #2843 (comment)

Pull Request resolved: #2910

Reviewed By: SamuelGabriel

Differential Revision: D77768681

Pulled By: Balandat

fbshipit-source-id: ff29c04b720221a7072160edd19537167dd71eb6

Author: Balandat

botorch_community/models/utils/__init__.py

@@ -0,0 +1,4 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.

botorch_community/utils/__init__.py

@@ -0,0 +1,4 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+#
+# This source code is licensed under the MIT license found in the
+# LICENSE file in the root directory of this source tree.