Adding neotree to lua/user

lua/user/neo-tree.lua

@@ -0,0 +1,28 @@
+local M = {}
+
+local find_buffer_by_type = function(type)
+  for _, buf in ipairs(vim.api.nvim_list_bufs()) do
+    local ft = vim.api.nvim_buf_get_option(buf, "filetype")
+    if ft == type then return buf end
+  end
+  return -1
+end
+
+local toggle_neotree = function(toggle_command)
+  if find_buffer_by_type "neo-tree" > 0 then
+    require("neo-tree.command").execute { action = "close" }
+  else
+    toggle_command()
+  end
+end
+
+function M.toggle_explorer_cwd()
+  toggle_neotree(function() require("neo-tree.command").execute { action = "focus", reveal = true, dir = vim.uv.cwd() } end)
+end
+
+function M.toggle_explorer_root()
+  toggle_neotree(function() require("neo-tree.command").execute { action = "focus", reveal = true } end)
+end
+
+return M
+