add the first pass of rollout_worker.py

rl_coach/rollout_worker.py

@@ -0,0 +1,14 @@
+from rl_coach.base_parameters import TaskParameters
+from rl_coach.core_types import EnvironmentEpisodes, RunPhase
+from rl_coach.presets.CartPole_DQN import graph_manager
+
+
+# TODO: workers might need to define schedules in terms which can be synchronized: exploration(len(distributed_memory)) -> float
+
+def main():
+    graph_manager.create_graph(TaskParameters())
+    graph_manager.phase = RunPhase.TRAIN
+    graph_manager.act(EnvironmentEpisodes(num_steps=10))
+
+if __name__ == '__main__':
+    main()