Move lsp config to local file structure

.config/nvim/lsp/fsharp_language_server.lua

@@ -0,0 +1,30 @@
+---@brief
+---
+--- F# Language Server
+--- https://github.com/faldor20/fsharp-language-server
+---
+--- An implementation of the language server protocol using the F# Compiler Service.
+---
+--- Build the project from source and override the command path to location of DLL.
+---
+--- If filetype determination is not already performed by an available plugin ([PhilT/vim-fsharp](https://github.com/PhilT/vim-fsharp), [fsharp/vim-fsharp](https://github.com/fsharp/vim-fsharp), and [adelarsq/neofsharp.vim](https://github.com/adelarsq/neofsharp.vim).
+--- ), then the following must be added to initialization configuration:
+---
+---
+--- `autocmd BufNewFile,BufRead *.fs,*.fsx,*.fsi set filetype=fsharp`
+
+local util = require 'lspconfig.util'
+
+---@type vim.lsp.Config
+return {
+  cmd = { 'dotnet', 'FSharpLanguageServer.dll' },
+  root_dir = function(bufnr, on_dir)
+    local fname = vim.api.nvim_buf_get_name(bufnr)
+    on_dir(util.root_pattern('*.sln', '*.fsproj', '.git')(fname))
+  end,
+  filetypes = { 'fsharp' },
+  init_options = {
+    AutomaticWorkspaceInit = true,
+  },
+  settings = {},
+}