Created UUIDFormatting.swift with .normalizedUUID and .uuidWithDashes
String extensions, replacing 4 duplicate formatUuidWithDashes() methods
and 6+ inline .replacingOccurrences(of: "-", with: "").uppercased() calls
across Api.swift, BeaconScanner.swift, ScanView.swift,
ServicePointListView.swift, BeaconBanList.swift, and BeaconProvisioner.swift.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
