WebAssembly Support

[Offroaders123]

I'd love to be able to use this library directly on the web, so being able to run a WebAssembly build on user-provided databases would be very powerful.

I plan on using the library to open, read, and write to Minecraft Bedrock world save LevelDB databases. I'd like to make an app that allows users to do this to edit their worlds. Ideally I'd like to be able to use this in the browser directly, because I don't want to use a platform like Electron or Tauri just to enable LevelDB support. Having the all-platform availability that comes with the web is super awesome, so being able to open your own Bedrock worlds on any device seems like a very great feature to have!

I'm also going to try compiling this library myself to work in the browser using WASM. I thought I'd mention it here first though, as anyone here already likely knows more how to do that than I do, haha.

Thanks for setting up this project! It's already working great for Bedrock worlds when running it in Node on the terminal.

[Offroaders123]

Trying to look into this again, I'm not sure how to configure things with the Makefile and Emscripten, going to keep trying to figure it out.

[Offroaders123]

Been thinking about this lately, and I am curious about getting rusty-leveldb working for it instead. I am looking to find out what this does differently in terms of compression compared to that. Do Bedrock worlds have a history of having databases that are compressed with Snappy, or solely Zlib? I also thought I heard that entries at one point were uncompressed.