emacs: Add Protobuf and just modes

home-manager/modules/emacs/config.org

@@ -1394,6 +1394,22 @@ It's better than nothing.
     :mode "\\.feature\\'")
 #+end_src
 
+*** Protobuf
+
+[[https://github.com/protocolbuffers/protobuf/blob/main/editors/protobuf-mode.el][protobuf-mode]]
+
+#+begin_src emacs-lisp
+  (use-package protobuf-mode)
+#+end_src
+
+*** Just
+
+[[https://github.com/leon-barrett/just-mode.el][just-mode]] provides syntax highlighting for Justfiles, for the command runner [[https://github.com/casey/just][just]]
+
+#+begin_src emacs-lisp
+  (use-package just-mode)
+#+end_src
+
 * Org
 
 ** Main org setup