Make version accesible as bytewax.__version__ from python code

[cra]

Is your feature request related to a problem? Please describe.
With the upcoming merge of py-operators and additional changes it would be beneficial to have an easy way that the bytewax you installed is the one you actually intended to use.

Describe the solution you'd like
I want to be able to do a simple

import bytewax
print(bytewax.__version__)

And see the version. I don't think we need any additional info at this point, but we can of course push the sha tag as well.

Describe alternatives you've considered
Comparing the tag to the git branch installed. Kinda works but when I'm in the middle of hacking around it would be nice to have a simple sanity check (I'm talking about my own sanity here ofc)

Additional context
I imagine it would also help debugging user issues or even as much as make the enforcing asserts in the example code, like assert bytewax.__version__ == '0.17.2'. We also probably want to use something like bumpversion to sync the versions between rust impl and python, but I think it can be done later, as we don't have that many releases at the moment

[whoahbot]

importlib has some interesting tools to determine the version of a package:

In [4]: from importlib.metadata import version

In [5]: version('bytewax')
Out[5]: '0.17.1'

Is that sufficient for what you would like, or do you think including it adds some functionality that importlib doesn't provide?