vim: Add :options, :map (#27798)

Add:
- [:options](https://neovim.io/doc/user/options.html#%3Aoptions) to open
default settings
- :map to open default vim keymap

These aren't exactly the same as vim but i think it's a good equivalent

For map:
I can't find the docs for :map with no arguments, since the map docs
only shows the command bindings, but it opens the key mapping in vim.

https://neovim.io/doc/user/vimindex.html

![image](https://github.com/user-attachments/assets/83aeebc4-e2e9-4818-890d-d307d5cee9b1)

Release Notes:

- vim: Added `:options` and `:map`

crates/vim/src/command.rs

@@ -882,6 +882,8 @@ fn generate_commands(_: &App) -> Vec<VimCommand> {
             .bang(editor::actions::ReloadFile),
         VimCommand::new(("ex", ""), editor::actions::ReloadFile).bang(editor::actions::ReloadFile),
         VimCommand::new(("cpp", "link"), editor::actions::CopyPermalinkToLine).range(act_on_range),
+        VimCommand::str(("opt", "ions"), "zed::OpenDefaultSettings"),
+        VimCommand::str(("map", ""), "vim::OpenDefaultKeymap"),
     ]
 }