gnome-extensions: add page (#4652)

pages/linux/gnome-extensions.md

@@ -0,0 +1,32 @@
+# gnome-extensions
+
+> Manage gnome extensions from the terminal.
+> More information: <https://wiki.gnome.org/Projects/GnomeShell/Extensions>.
+
+- Display the version:
+
+`gnome-extensions version`
+
+- List all the installed extensions:
+
+`gnome-extensions list`
+
+- Display information about a specific extension:
+
+`gnome-extensions info "{{extension_id}}"`
+
+- Display help for a subcommand (like `list`):
+
+`gnome-extensions help {{subcommand}}`
+
+- Enable a specific extension:
+
+`gnome-extensions enable "{{extension_id}}"`
+
+- Disable a specific extension:
+
+`gnome-extension disable "{{extension_id}}"`
+
+- Uninstall a specific extension:
+
+`gnome-extension unistall "{{extension_id}}"`