add openai model to config, rework logging to use appdirs logging dir

src/ui/dialogs/mail.py

@@ -10,11 +10,11 @@ from .dialog_sources.Ui_mail_preview import Ui_eMailPreview as MailPreviewDialog
 from .mailTemplate import MailTemplateDialog
 import loguru
 import sys
-
+from src import LOG_DIR
 log = loguru.logger
 log.remove()
 log.add(sys.stdout, level="INFO")
-log.add("logs/application.log", rotation="1 MB", retention="10 days")
+log.add(f"{LOG_DIR}/application.log", rotation="1 MB", retention="10 days")