add a temp copy of TF agents (until the API stops changing or configs.py are included)

examples/pybullet/gym/pybullet_envs/agents/__init__.py

@@ -1,2 +1,23 @@
+# Copyright 2017 The TensorFlow Agents Authors.
+#
+# 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.
 
+"""Executable scripts for reinforcement learning."""
 
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+
+from . import train_ppo
+from . import utility
+from . import visualize