[2023-09-10] AI backend integration (ChatGPT and more), script engine reworks, various UI improvements

This is a major release, comprising one year's worth of development (although I did take breaks in between :) ).

Major changes include:

• Script engine revamp:

• A new Evil script engine is implemented, completely replacing the old one.
• It's performance is 5 to 10 times faster than the old script engine, and supports a lot of language features that you often see in other programming languages.
• This release introduce a lot of breaking changes! For more information, see https://github.com/Kagamma/satania-buddy/wiki/Scripting-Reference

• AI backend integration (ChatGPT, KoboldCPP, Oobabooga, WolframAlpha):
  

• Implemented directly in evil script, allows you to change and tweak the source code easily.
• For ChatGPT, you need to supply your own key, by opening ChatGPT.evil file (click on the pencil button in chat window), and replace <YOUR SECRET KEY> with your key.
• For KoboldCPP and Oobabooga, all you need to do is to run them alongside with satania-buddy. As long as their settings don't change, satania-buddy should be able to connect to their API.
• If you host your KoboldCPP / Oobabooga instance on a remote server, make sure to change API endpoint in koboldcpp.evil / oobabooga.evil source code.
• (Please note that Oobabooga integration was implemented back in May, and there might have been changes since then because the Oobabooga API is not as stable as KoboldCPP's)
• (As a side effect, the old built-in WolframAlpha service and external 3rd party service have been removed. "Rules" feature is also disabled by default, as it will conflict with new AI backend integration)
• See https://github.com/Kagamma/satania-buddy/wiki/External-Services for more related information.

• UI overhaul:

• Implemented a new chat window, replacing the old one for improved AI backend integration, enabling AI service selection within the chat window.
  

• Added support for saving and editing chat history for each character.
• New chat bubble, completely replacing the old one. Non-latin fonts are supported, without having to define character set like the old chat bubble.
• Improved Evil script editor with dark theme support and enhanced color highlighting for Evil script and JSON. You can also open multiple code editors at once.
  
• Introduced new UI changes in other areas such as the Settings dialog, Alarms and Reminders dialog, etc.

• New Satania model (please note it's not finished yet, and you can still access the old model via Settings menu):

• Satania in gym uniform!
  
• There're plans to add expressions to the new model, and make her react to chat.

• Bugfixes and other minor improvements.
  • Bumped Spine2D support to version 4.1.
  • Fixed Sit On Window bug, causing sprite not appear when moving to other monitors.
  • Fixed json_parser() and json_stringify()
  • Fixed minor bug that cause POST request invalid.
  • Fixed a bug that cause touch panel not working on sprite-based characters.
  • Fixed issue with ansi strings.
  • Fixed reminder bug.
  • Fixed array concat bug.
  • And many other fixes and improvements, see https://github.com/Kagamma/satania-buddy/commits/master