Move lsp config to local file structure

.config/nvim/lsp/msbuild_project_tools_server.lua

@@ -0,0 +1,47 @@
+---@brief
+---
+--- https://github.com/tintoy/msbuild-project-tools-server/
+---
+--- MSBuild Project Tools Server can be installed by following the README.MD on the above repository.
+---
+--- Example config:
+--- ```lua
+--- vim.lsp.config('msbuild_project_tools_server', {
+---   cmd = {'dotnet', '/path/to/server/MSBuildProjectTools.LanguageServer.Host.dll'}
+--- })
+--- ```
+---
+--- There's no builtin filetypes for msbuild files, would require some filetype aliases:
+---
+--- ```lua
+--- vim.filetype.add({
+---   extension = {
+---     props = 'msbuild',
+---     tasks = 'msbuild',
+---     targets = 'msbuild',
+---   },
+---   pattern = {
+---     [ [[.*\..*proj]] ] = 'msbuild',
+---   },
+--- })
+--- ```
+---
+--- Optionally tell treesitter to treat `msbuild` as `xml` so you can get syntax highlighting if you have the treesitter-xml-parser installed.
+---
+--- ```lua
+--- vim.treesitter.language.register('xml', { 'msbuild' })
+--- ```
+
+local host_dll_name = 'MSBuildProjectTools.LanguageServer.Host.dll'
+local util = require 'lspconfig.util'
+
+---@type vim.lsp.Config
+return {
+  filetypes = { 'msbuild' },
+  root_dir = function(bufnr, on_dir)
+    local fname = vim.api.nvim_buf_get_name(bufnr)
+    on_dir(util.root_pattern('*.sln', '*.slnx', '*.*proj', '.git')(fname))
+  end,
+  init_options = {},
+  cmd = { 'dotnet', host_dll_name },
+}