update: fix logger reference in DefaultCmabClient initialization and add __init__.py for cmab module

Author: FarhanAnjum-opti

optimizely/cmab/__init__.py

@@ -0,0 +1,12 @@
+# Copyright 2025, Optimizely
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.

optimizely/optimizely.py

@@ -179,7 +179,7 @@ def __init__(
         # Initialize CMAB components
         self.cmab_client = DefaultCmabClient(
             retry_config=CmabRetryConfig(),
-            logger=logger
+            logger=self.logger
         )
         self.cmab_cache: LRUCache[str, CmabCacheValue] = LRUCache(DEFAULT_CMAB_CACHE_SIZE, DEFAULT_CMAB_CACHE_TIMEOUT)
         self.cmab_service = DefaultCmabService(