Emacs and inputs updated

- Added org-roam in Emacs
- Flake inputs updated
- Other little modifications

users/profiles/emacs/emacs.d/config/nix.el

@@ -9,6 +9,9 @@
 
 (defun nixos-rebuild-test ()
   (interactive)
+  ;; async-shell command should be sufficient, to check why it isn't
   (sudo-utils-shell-command "nixos-rebuild test"))
 
+(global-set-key [f6] 'nixos-rebuild-test)
+
 (provide 'nix)