v1.0.23

Changelogs:

• Removed a package from requirements.txt as it's no longer used.
• Removed some import libs from import_libs, as they are no longer used.
• Improved the Menu.py functions:
  • Most of stuff are revised to use venv's python directly.
  • Menu text is center now.
  • Renamed palguard to paldefender.
• Renamed palguard_bases.py to paldefender_bases.py
• Updated README.md with new pic of menu.