Update .gitignore and format __main__.py

.gitignore

@@ -73,6 +73,7 @@ __pycache__/
 dist/*
 build/*
 ui_*.py
+.ropeproject/
 
 # Binaries
 # --------

openfm_qt/__main__.py

@@ -1,14 +1,16 @@
-# This Python file uses the following encoding: utf-8
+# coding=utf-8
 
 from PySide6.QtWidgets import QApplication
 from . import MainWindow
 import sys
 
+
 def main():
     app = QApplication(sys.argv)
     widget = MainWindow()
     widget.show()
     sys.exit(app.exec())
 
+
 if __name__ == "__main__":
     main()