[Feature Request] Allow for setting additional URLs to exclude via profile (UserDefaults)

[ryangball]

Is your feature request related to a problem? Please describe.
The exclusions list could be appended to without needing to rebuild the project. This can be done easily with UserDefaults as there are already options configured like this already.

Describe the solution you'd like

1. Rename existing urlExclusionsList to defaultExclusionsList
2. Introduce a new excludedPathsListKey property to define the key we will use
3. Create a new urlExclusionsList static var that combines the defaultExclusionsList and managed exclusions via UserDefaults by mapping the new excludedPathsList key to an array of URLs