Add support to subset files in time for stats analysis

[sssangha]

Added support within the raiderCombine.py pipeline to support temporal subsetting, which is introduced as a new option --timeinterval.

If a valid argument is provided, temporal sampling is performed in 2 phases:

1. With a 1 day buffer encompassing the specified --timeinterval in order to not lose valid observations due to time zone changes.
2. With the explicit specified --timeinterval once 'Localtime' has been computed

Screenshots (if appropriate):

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• I have added an explanation of what your changes do and why you'd like us to include them.
• I have written new tests for your core changes, as applicable.
• I have successfully ran tests with your changes locally.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.

[jlmaurer]

@sssangha could this be Union[List[Path], Path]?

[sssangha]

I made the logic more consistent overall in the code, but the logic is as follows:

• Support wildcard/multiple path input in the parser
• Split into a list discrete individual paths and push them through as individual paths through the downstream function.

I verified the outputs I get now vs before this little clean-up are consistent though, so the files are being pushed through as we'd expect.