Consider listing lspf, a Rust framework for LSP servers and clients

[meymchen]

Hi, I maintain lspf, a Rust framework for building Language Server Protocol servers and clients.

It provides protocol lifecycle management, document synchronization, typed request handling, and transport adapters. Applications supply their own language analysis.

• Documentation: https://lspf.dev
• Examples: https://github.com/meymchen/lspf/tree/main/crates/lspf/examples
• Markdown server demo: https://github.com/meymchen/lspf#see-it-work-in-30-seconds

Would lspf be suitable for inclusion? I noticed the existing Langium, Xtext, and multilspy entries. Which section would you recommend for a framework supporting both servers and clients?

I'd be happy to submit a PR with the appropriate entry.