Add a CMake module that writes rust-project.json on every configure so
rust-analyzer can resolve the no-Cargo crate layout, sysroot crates,
and proc-macro attributes without Cargo.
Co-Authored-By: qwen (lmstudio/qwen3.8-27b@q3_k_xl): LSP setup
Add a minimal no-core Rust executable built by invoking rustc directly from CMake.
The project avoids Cargo and Rust core, alloc, and std, writes to stdout
through platform APIs, and supports optimized Ninja release builds.
Co-Authored-By: luna (openrouter/openai/gpt-5.6-luna): project setup and build
portersky