Now no-autoupdater mode can be switched on in runtime. Also TDESKTOP_DISABLE_AUTOUPDATE build is disabled in CI (trivial). Fixes #4895.
Move logs:SignalHandlers to core/crash_reports:CrashReports. Move all pre-launch windows to core/crash_report_window module. Move some global code to core/launcher:Launcher. It should replace settings / platform_specific module in some way.