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

run.py

@@ -1,12 +1,4 @@
-import sys
-import os
-
-# Ensure the git_monitor directory is in the search path
-current_dir = os.path.dirname(os.path.abspath(__file__))
-git_monitor_dir = os.path.join(current_dir, "git_monitor")
-sys.path.insert(0, git_monitor_dir)
-
-from main import Application
+from git_monitor.main import Application
 
 if __name__ == "__main__":
     app = Application()