Refactor asset paths for settings icons in the GUI and reorganize main.py structure

main.py

@@ -1,3 +1,19 @@
-from core.gui import run_gui
+from core.gui import run_gui as gui
+from core.gui import MainWindow
+from PySide6 import QtWidgets
+import sys
 
-run_gui()
+
+
+
+
+def run_gui():
+    app = QtWidgets.QApplication([])
+    widget = MainWindow()
+    widget.show()
+    sys.exit(app.exec())
+
+
+
+if __name__ == "__main__":
+    run_gui()