Feat: Add Milliseconds to log time - #9113

Modifiers the Logger

• remove unused Logger:m_verbose and related method
• directly set Logger::m_debug using when in debug mode
• Logger::instance return a pointer to the logger static object
• use QStringLiterals
• Logger::PrintLine use less streams and use the one we need directly

Remove unused

• remove unused MainWindow::getTimeStamp
• AboutDialog remove unneeded includes

Modify the Log

• Log::makeMessages use QDateTime to get current Time
• Log remove unneeded includes

Feat: Show milliseconds in time values (fixes Add millis to log lines for tracking down bugs between client/server #7861)

• Sets both the Logger and Log to use Qt::IsoDateWithMs for the time format