Added new methods to create new namespaces and variables on CANoe.

[gfabiano]

I added two new methods that I needed in my environment, i think that they could be useful.

[chaitu-ycr]

https://github.com/chaitu-ycr/py_canoe/releases/tag/v0.1.3 https://pypi.org/project/py_canoe/0.1.3/