[Experimental] Rust-based LuaLs

This version switches the host part of luals entirely to a Rust implementation. The related build tool directly uses Cargo. It is not fully completed yet; it can run on the Windows platform for now. I do not have the equipment to test it on other platforms.

I created this repo as a way to learn Rust and did not intend to replace the original luals. It simply provides another possibility for multi-platform compilation.

link: https://github.com/LuaLS/lua-language-server-rust

该 issue 指向单独的 lua-language-server-rust repository，并说明其 host 使用 Rust 和 Cargo，Windows 是唯一经过测试的平台。首先检查该 repository 以及现有的 host/build 集成；未指定任何文件、测试或完成标准，也未定义跨平台完成的要求。