feat: add vale-ls

flake.nix

@@ -80,6 +80,7 @@
               nixd # nix language server
               tinymist # Typst
               marksman # markdown
+              vale-ls # prose
 
               # formatters
               nixfmt-rfc-style # recommended nix formatter

lua/lsp/init.lua

@@ -69,6 +69,9 @@ M.setup = function()
   lspconfig.clangd.setup({})
   lspconfig.mesonlsp.setup({})
   lspconfig.nushell.setup({})
+  lspconfig.vale_ls.setup({
+    filetypes = { "markdown", "text", "tex", "rst", "typst" },
+  })
 end
 
 return M