feat: add protols support (neovim#3219)

* feat: add protols support

* refactor: collapse function

Co-authored-by: glepnir <[email protected]>

---------

Co-authored-by: glepnir <[email protected]>

Author: coder3101

.codespellignorewords

@@ -1,3 +1,4 @@
 als
 edn
 esy
+protols

lua/lspconfig/server_configurations/protols.lua

@@ -0,0 +1,22 @@
+local util = require 'lspconfig.util'
+
+return {
+  default_config = {
+    cmd = { 'protols' },
+    filetypes = { 'proto' },
+    single_file_support = true,
+    root_dir = util.find_git_ancestor,
+  },
+  docs = {
+    description = [[
+https://github.com/coder3101/protols
+
+`protols` can be installed via `cargo`:
+```sh
+cargo install protols
+```
+
+A Language Server for proto3 files. It uses tree-sitter and runs in single file mode.
+]],
+  },
+}