Chunk execute actions that do not need an event response

Expected syntax:

```python
from ai2thor.controller import Controller
controller = Controller()

with controller.no_response():
controller.reset(scene="FloorPlan28")
controller.step("RandomizeColors")
controller.step("InitialRandomSpawn")
controller.step("PickupObject", objectId={...}, forceAction=True)

controller.step("Teleport", position=dict(x=0, y=0, z=0))
```

where the returned event for each action in the `no_response` context manager is `None` (meaning no frames or metadata is passed back to Python). This should speed up initialization which increasingly uses more than 1 action.