Add hydra config for git-gutter.

configs/init-packages.el

@@ -119,7 +119,17 @@
 (use-package git-gutter
   :defer t
   :hook
-  (elpaca-after-init . global-git-gutter-mode))
+  (elpaca-after-init . global-git-gutter-mode)
+  :config
+  (defhydra hydra-git-gutter nil
+            "git hunk"
+            ("p" git-gutter:previous-hunk "previous")
+            ("n" git-gutter:next-hunk "next")
+            ("s" git-gutter:stage-hunk "stage")
+            ("r" git-gutter:revert-hunk "revert")
+            ("m" git-gutter:mark-hunk "mark")
+            ("SPC" git-gutter:toggle-popup-hunk "toggle diffinfo"))
+  )
 
 ;; Cliente LLM (ollama, chatgpt, gemini, etc.)
 (use-package gptel