Config file has poor (no) defaults

[gdasher]

🐛 Summary

When using the command line to pass parameters, there are reasonable default values for all parameters. When using the config file, if you don't provide values for every parameter, the behavior is inconsistent.

To reproduce

Steps to reproduce the behavior:

1. Create a config file only specifying CapExclusions
2. Run Invoke-Scuba with said config file.

Expected behavior

What did you expect to happen that didn't?

In some cases, there is logic to handle the resultant missing values and in other cases there is not. Certain values like OpaPath, OutReportName, OutProviderFileName, etc that change rarely should inherit their default values (which are currently specified as default arguments in an unused parameterset).