Deadline: Report GlobalJobPreLoad version in logs

[BigRoy]

Issue

When debugging Deadline render issues in the community it often becomes unclear whether they have an up-to-date GlobalJobPreLoad.py nor is it clear what version they are using.

Proposal

Now, I think we need to add a variable version in GlobalJobPreLoad.py because I can't tell which is which!

Yes, please! And bonus points for the GlobalJobPreLoad logs also mentioning the version its running!

We can add e.g. this top of file:

__version__ = "1.0.0"

And then log it in __main__(), e.g.:

    print(f"*** GlobalJobPreload start {__version__}...")

We might want to do something similar to the Deadline Ayon plugin itself.

Originally posted by @BigRoy in #5815 (comment)

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Not sure what the best implementation might be since it wouldn't say anything about whether a version hasn't been changed locally at all - but at least it would hint to a particular version.

[BigRoy]

I missed this one was just opened: #5919