feat(logging): add runtime log levels and debug log export (#241)

Add a System setting for Off/Normal/Debug logging, apply readable local timestamps to backend logs, and enable exporting buffered runtime logs to a file when debug mode is active.

Co-authored-by: Maxim Isaev <im@friclub.ru>

src/locales/nb.ts

@@ -651,6 +651,14 @@ export const nbTranslation = {
     tabServer: 'Tjener',
     tabUsers: 'Brukere',
     tabSystem: 'System',
+    loggingTitle: 'Loggføring',
+    loggingModeDesc: 'Styrer hvor detaljert backend-loggene i terminalen er.',
+    loggingModeOff: 'Av',
+    loggingModeNormal: 'Normal',
+    loggingModeDebug: 'Debug',
+    loggingExport: 'Eksporter logger',
+    loggingExportSuccess: 'Logger eksportert ({{count}} linjer).',
+    loggingExportError: 'Kunne ikke eksportere logger.',
     tabGeneral: 'Generelt',
     ratingsSectionTitle: 'Vurderinger',
     ratingsSkipStarTitle: 'Hopp for 1 stjerne',