zig-run should save the current buffer

[indradhanush]

First of all thank you so much for this package! ❤️

I just wrote my own function to save the current buffer when I execute zig-run with C-x C-r in doomemacs:

(use-package! zig-mode
  :config
  (defun my/save-buffer-and-execute-zig-run ()
    "Save the current buffer and execute `zig-run`."
    (interactive)
    (save-buffer)
    (zig-run))

  (define-key zig-mode-map (kbd "C-c C-r") #'my/save-buffer-and-execute-zig-run))

Without this most of the time I found myself pressing C-c C-r only to realise that I haven't saved the file yet.

Should zig-run always save the buffer when it is executed? I'd be happy to send in a PR but wanted to check first before I sent one.