Updated exposure function call: enable temporal filtering

[erialC-P]

This PR updates the exposure function to incorporate the ability to include temporal filtering in the exposure output/s. Incorporating this update into the intertidal repo is required to enable moving the exposure demo notebook into the dea_notebooks repository whilst ensuring enabled functionality is provided by the intertidal repository.

Changes and updates:

• all updates to the function call default to None so theoretically, no updates should be required to the remainder of our production code base.
• [Important] returned exposure values are now included in a dict object. A working prototype for handling this is included in the Intertidal_workflow.ipynb.
• Optional inclusions in this new exposure function include the ability to apply temporal filters to the exposure high temporal resolution tidal modelling (e.g. winter dates only). Separately, tuples of filters can be applied (e.g. winter daytime). Lastly, functionality is built in to return the tide modelling and filtered tide height values to enable demonstration of the exposure method in other workflows.

Future work:

• combine single and tuple filter options into single function call
• thoroughly check all docstrings to ensure they are up to date

[github-actions]

For full integration test results, refer to the Tests directory README.

[robbibt]

I think given we're only ever going to be extracting the "unfiltered" layer here, I think we can simplify this code to:

ds["exposure"] = exposure_filters["unfiltered"]

[robbibt]

There's a similar code block below this that is commented out - can you have a look and see if we can remove one of these?

[robbibt]

In the function below, tide_cq_dict is called modelledtides_ds - can we use that terminology here too for consistency?

(are these raw modelled tides or tide quantiles? Alternatively, we could call it something like tide_quantiles_ds too if that was more clear)

[erialC-P]

I'll update that variable name. It's a legacy hangover from an earlier version of the code.

[robbibt]

Wooo!