feat: Initialize Windows 9x Manager package and core functionality

- Created the main package structure for Windows 9x Manager.
- Added core functionality for disk image management in `disk.py`.
- Implemented HDD image creation with a progress dialog.
- Developed the main UI manager class in `manager.py` for user interactions.
- Included utility functions for configuration management and system checks.
- Established a template for DOSBox-X configuration.
- Created snapshot management features for saving and restoring system states.

assets/create_assets_dir.sh

@@ -1,3 +0,0 @@
-#!/bin/bash
-# This is just a placeholder to create the assets directory
-mkdir -p /home/enne2/Development/win9xman/assets