add python support, some keymap and options

lua/kickstart/plugins/neo-tree.lua

@@ -16,6 +16,11 @@ return {
   opts = {
     popup_border_style = 'NC', -- or "" to use 'winborder' on Neovim v0.11+
     filesystem = {
+      filtered_items = {
+        visible = true, -- This is what you want: If you set this to `true`, all "hide" just mean "dimmed out"
+        hide_dotfiles = false,
+        hide_gitignored = false,
+      },
       window = {
         mappings = {
           ['\\'] = 'close_window',