Create a decorator function to extract options from Strategy

[tjgalvin]

At the moment in order to get round specific options from the Strategy yaml file an explicit call has to be made into get_options_from_strategy with a set of keywords that specify the mode, self cal round and operation to uniquely identify the target set of user provided options. If these do not exist an empty dictionary is returned.

This has worked fine in the past, but requires an explicit function call to get options, which are passed through into the target function.

This pull request explores whether a decorator function is of any use. The idea being that we can add the strategy extraction parameters to a target function, such that the target function itself extracts the appropriate options. Functionally, there is still a call into the Strategy yaml file, but it is hidden.

At best, it keeps all keyword arguments that act as inputs to a particular processing stage together and removes some clutter in the larger prefect workflow.

At worst, it can be seen as confusing and hides logic that may not be immediately obvious to someone who does not know the task has been wrapped.

This pull request does not remove the old approach of separating the call into the strategy options getter - that is still a completely supported mode.

Thoughts are welcome. After doing this I have two issues:

• the decorator itself returns a new function, which has a different __name__ and __doc__ to the wrapped function. There might be other gotchas that come from this. I already found that functools.wraps causes errors with the prefect.task argument validation
• It feels a little smelly. To date I have preferred explicit is better than implicit, and this is feeling like it is getting a little too close to the implicit.

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 95.12195% with 2 lines in your changes missing coverage. Please review.

Project coverage is 60.28%. Comparing base (f65ddb4) to head (240eeb7).

Files with missing lines	Patch %	Lines
flint/configuration.py	97.05%	1 Missing ⚠️
flint/prefect/flows/continuum_pipeline.py	0.00%	1 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main     #180      +/-   ##
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- Coverage   60.32%   60.28%   -0.04%     
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  Files          33       33              
  Lines        5727     5749      +22     
==========================================
+ Hits         3455     3466      +11     
- Misses       2272     2283      +11     

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