Add WIP section for TNT search with Grav

pages/02.linux/grav/default.en.md

@@ -19,6 +19,12 @@ Make sure the directory you want to use is owned by your webserver user. (www-da
 **With included admin client**
 `sudo -u www-data wget https://getgrav.org/download/core/grav-admin/1.7.32`
 
+### TNT Search
+
+**TODO**
+
+Packages: `php-mysql php-sqlite3`
+
 ## Theme Learn2 Customisations
 
 ### Fix for wonky sidebar