Rust Glancer: Rust LSP using 100x less RAM

Rust Glancer is a new language server protocol (LSP) implementation for Rust that uses significantly less memory than the standard rust-analyzer, targeting under 100MB for typical projects while maintaining core functionality like code completion, hover information, and goto definition. The project, developed over four months, achieves memory efficiency through architectural choices that differ from rust-analyzer, though it remains incomplete with some missing features and known bugs. It is available as a VS Code extension and performs comparably to rust-analyzer in indexing speed across different machine configurations.