godot-valet: FileExplorer & Claude.Api Integration

Added two new major features. Both are thin slices of what's to come.

• File Explorer (Beta)
• Quickly navigate and filter for images you want to import into a project.
• Supports fast/seamless navigations through zip files
• Provides quick view with panning and zooming
• In general, it should speed things up when you want to go digging through your downloaded assets folder for things. This first iteration is primitive and only supports images and files but I plan to add sounds, file editing, videos and etc.
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• LLM Integration with Claude (Beta/POC)
  • This is just a demo. I added a chat-like interface for interacting with Clause.API. You'll need a paid account to get an api key. I'm just playing around with ideas. I'm looking at a lot of AI offerings right now but I'm thinking about how we can integrate LLMs with gdscript/godot development. 
    
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• Other stuff
  
  • Added support for customizing the image. Click on the thumbnail for your project to customize it.
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  • Added additional help output for new butler users to help get them going.

As with all godot-valet features (beta or not), I welcome feedback and requests. Upcoming enhancements are likely to be around sound preview/imports and claude integration with project code. Plan on releasing a video in the next few days covering these new features. I might post it on the project page if I remember. Otherwise, search for godot-valet in youtube.