add search-url slot is site-settings class (site-settings.lisp).

src/models/site-settings.lisp

@@ -36,7 +36,15 @@
     :col-type (or :text :null)
     :initarg :home-page
     :initform "home"
-    :accessor home-page-of))
+    :accessor home-page-of)
+
+   (search-url
+    :documentation "The URL for the Meilisearch instance this site calls out to
+    for it's search features."
+    :col-type (or :text :null)
+    :initarg :search-url
+    :initform "http://localhost:7700" ; Default Meilisearch URL.
+    :accessor search-url-of))
   
   (:documentation "Model used to track the site-wide settings -- stored in the database.")
   (:metaclass mito:dao-table-class))