Move the logger logic to the base class

[pixcc]

Some CLI commands using logger to print logs. They initialize logger something like that:

ydb/ydb/public/lib/ydb_cli/commands/topic_operations_scenario.cpp

Lines 65 to 66 in 759115d

	Log = std::make_shared<TLog>(MakeLogBackend(config.VerbosityLevel));
	Log->SetFormatter(GetPrefixLogFormatter(""));

It would be nice to move this to base class.