v0.4.0

• Misc fixes and enhancements
• You can run makearc.cmd to build data.zip used by the examples
• Added ziparc.exe, zip archive utility. It uses ZipFile_Build in
  gamelib to create standard, password protected zip archives of your game
  resources.
• Added video playback examples, can playback video from zip archive in
  real-time
• Started working on gamelib
• Update all genaixx examples
• Switch back to llama.cpp for genai backend