[doom] Add gptel-tool-library package

Integrate gptel-tool-library by:
- Adding package definition to packages.el with custom recipe
- Configuring library settings and module loading in config.el
- Enabling module-specific functionality for bbdb, buffer, etc.

home/modules/emacs/doom/config.el

@@ -130,6 +130,13 @@
         (:prefix ("o" . "open")
          :desc "Claude Code IDE" "c" #'claude-code-ide-menu)))
 
+(after! gptel
+  (require 'gptel-tool-library)
+  (setq gptel-tool-library-use-maybe-safe t
+        gptel-tool-library-use-unsafe t)
+  (dolist (module '("bbdb" "buffer" "elisp" "emacs" "gnus" "os" "search-and-replace" "url"))
+    (gptel-tool-library-load-module module)))
+
 ;; Whenever you reconfigure a package, make sure to wrap your config in an
 ;; `after!' block, otherwise Doom's defaults may override your settings. E.g.
 ;;