Introduces options to specify custom PAC file and system proxy script paths for system proxy settings. Updates configuration models, view models, UI bindings, and logic for Linux/OSX proxy handling and PAC management to use these custom paths if provided. Also adds UI elements and localization for the new settings.
Renamed FileManager to FileUtils and updated all references accordingly. Moved SemanticVersion to the Models namespace. Replaced WindowsJob with WindowsJobService, relocating and updating the implementation. Updated usages in CoreManager and related classes to use the new service and utility names. These changes improve code organization and naming consistency.
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