gptel: Theme gptel-gh-token-file and gptel-gh-github-token-file

These are used to store authentication tokens after the GitHub login flow.

Author: skissue

no-littering.el

@@ -272,6 +272,8 @@ This variable has to be set before `no-littering' is loaded.")
     (setq gnus-notes-file                  (var "gnus-notes/articles.el"))
     (setq gnus-notes-top-dir               (var "gnus-notes/"))
     (setq gptel-crowdsourced-prompts-file  (var "gptel-crowdsourced-prompts.csv"))
+    (setq gptel-gh-token-file              (var "gptel/gh-token"))
+    (setq gptel-gh-github-token-file       (var "gptel/gh-github-token"))
     (setq grammalecte-settings-file        (etc "grammalecte-settings.el"))
     (setq hackernews-visited-links-file    (var "hackernews/visited-links.el"))
     (setq harpoon-cache-file               (var "harpoon/"))