add more lsp servers for nvim

nvim/lua/settings/lsp_config/bashls.lua

@@ -0,0 +1,37 @@
+local util = require 'lspconfig.util'
+
+local bin_name = 'bash-language-server'
+local cmd = { bin_name, 'start' }
+
+if vim.fn.has 'win32' == 1 then
+  cmd = { 'cmd.exe', '/C', bin_name, 'start' }
+end
+
+return {
+  default_config = {
+    cmd = cmd,
+    cmd_env = {
+      -- Prevent recursive scanning which will cause issues when opening a file
+      -- directly in the home directory (e.g. ~/foo.sh).
+      --
+      -- Default upstream pattern is "**/*@(.sh|.inc|.bash|.command)".
+      GLOB_PATTERN = vim.env.GLOB_PATTERN or '*@(.sh|.inc|.bash|.command)',
+    },
+    filetypes = { 'sh' },
+    root_dir = util.find_git_ancestor,
+    single_file_support = true,
+  },
+  docs = {
+    description = [[
+https://github.com/mads-hartmann/bash-language-server
+`bash-language-server` can be installed via `npm`:
+```sh
+npm i -g bash-language-server
+```
+Language server for bash, written using tree sitter in typescript.
+]],
+    default_config = {
+      root_dir = [[util.find_git_ancestor]],
+    },
+  },
+}