General Fixes

Fix (installer): Improve installation and uninstallation process

• Fix incomplete uninstallation by adding proper [UninstallDelete] section
• Remove duplicate executable issue by optimizing file copying strategy
• Reduce installer size by ~40% (from ~125MB to ~74MB) by excluding unnecessary runtime components
• Add support for clean updates by implementing pre-installation cleanup
• Preserve Scripts folder during updates while removing old files
• Ensure proper internationalization by including language resource folders
• Add automatic application termination during uninstallation

Implement Custom UAC Settings Persistence

• Created a new CustomUacSettings model to represent custom UAC settings
• Implemented IUacSettingsService interface to define the contract for UAC settings persistence
• Added UacSettingsService to handle saving and loading custom UAC settings from UserPreferences.json
• Modified UacOptimizations to work with the new service-based approach
• Updated WindowsSystemService to use the new IUacSettingsService
• Enhanced WindowsSecurityOptimizationsViewModel to properly handle custom UAC settings
• Fixed potential deadlocks by making TryGetCustomUacValues completely synchronous
• Ensured Custom UAC option remains in dropdown when custom settings exist in preferences

Winhance.Installer.exe SHA256: ea71a876062ec20b37ab7afc448f264b1f43c5d31f1c8d1bbeb27844fd8f5b1e