fix: convert git_monitor to proper package and fix absolute imports for PyInstaller compatibility

git_monitor/tray_app.py

@@ -5,11 +5,11 @@ from tkinter import filedialog
 from PIL import Image, ImageDraw
 import pystray
 from pystray import MenuItem as item
-from logger import logger
-from config import config
-from git_manager import git_manager
-from file_watcher import RepositoryWatcher
-from notifier import notifier
+from git_monitor.logger import logger
+from git_monitor.config import config
+from git_monitor.git_manager import git_manager
+from git_monitor.file_watcher import RepositoryWatcher
+from git_monitor.notifier import notifier
 
 class TrayApp:
     def __init__(self):