chore/remove globals (#1279)

* remove renderer globals: nvim_tree_add_trailing nvim_tree_highlight_opened_files nvim_tree_root_folder_modifier nvim_tree_special_files

* remove renderer globals: nvim_tree_icon_padding

* remove renderer globals: nvim_tree_symlink_arrow

* remove renderer globals: nvim_tree_show_icons, nvim_tree_show_icons

* remove renderer globals: nvim_tree_git_hl

* remove renderer globals: nvim_tree_group_empty

* remove renderer globals: respect_buf_cwd

* remove renderer globals: nvim_tree_create_in_closed_folder

* remove globals: consistency in legacy checks

* remove renderer globals: nvim_tree_special_files

* renderer.icons.symbols -> glyphs

lua/nvim-tree/actions/create-file.lua

@@ -42,7 +42,7 @@ local function get_num_nodes(iter)
 end
 
 local function get_containing_folder(node)
-  local is_open = vim.g.nvim_tree_create_in_closed_folder == 1 or node.open
+  local is_open = M.config.create_in_closed_folder or node.open
   if node.nodes ~= nil and is_open then
     return utils.path_add_trailing(node.absolute_path)
   end
@@ -112,4 +112,8 @@ function M.fn(node)
   end)
 end
 
+function M.setup(opts)
+  M.config = opts
+end
+
 return M