add folder arrows (#1022)

lua/plugins/configs/nvimtree.lua

@@ -10,12 +10,12 @@ local g = vim.g
 g.nvim_tree_add_trailing = 0 -- append a trailing slash to folder names
 g.nvim_tree_git_hl = 1
 g.nvim_tree_highlight_opened_files = 0
-g.nvim_tree_root_folder_modifier = table.concat { ":t:gs?$?/..", string.rep(" ", 1000), "?:gs?^??" }
 
 g.nvim_tree_show_icons = {
    folders = 1,
    files = 1,
    git = 1,
+   folder_arrows = 1,
 }
 
 g.nvim_tree_icons = {
@@ -34,9 +34,11 @@ g.nvim_tree_icons = {
       default = "",
       empty = "",
       empty_open = "",
-      open = " ",
+      open = "",
       symlink = "",
       symlink_open = "",
+      arrow_open = "",
+      arrow_closed = "",
    },
 }
 
@@ -71,7 +73,7 @@ local options = {
    },
    renderer = {
       indent_markers = {
-         enable = true,
+         enable = false,
       },
    },
 }