Add Relationship::notIncludable()

Author: tobyzerner

src/Schema/Field/Relationship.php

@@ -46,6 +46,16 @@ public function includable(): static
         return $this;
     }
 
+    /**
+     * Don't allow this relationship to be included.
+     */
+    public function notIncludable(): static
+    {
+        $this->includable = false;
+
+        return $this;
+    }
+
     /**
      * Include linkage for this relationship.
      */