Init object automatically

```python
from compas.geometry import Box
from compas_viewer import Viewer

viewer = Viewer()
box = Box(1)
boxobj = viewer.scene.add(box)

ticker = True

@viewer.on(interval=1000)
def reload(frame):

global boxobj, ticker

if ticker:
print("removing box")
viewer.scene.remove(boxobj)
else:
print("Adding box")
boxobj = viewer.scene.add(box)
boxobj.init() # This should not be necessary

ticker = not ticker
viewer.renderer.update()

viewer.show()
```