fsharp-ts-mode: A Modern Emacs Mode for F#

I’m pretty much done with the focused development push on neocaml – it’s reached a point where I’m genuinely happy using it daily and the remaining work is mostly incremental polish. So naturally, instead of taking a break I decided it was time to start another project that’s been living in the back of my head for a while: a proper Tree-sitter-based F# mode for Emacs.