Add goals feature for personal goals with filters

app/Service/BillingContract.php

@@ -43,6 +43,15 @@ class BillingContract
         return null;
     }
 
+    /**
+     * The maximum number of goals the organization can have; null means unlimited.
+     * Archived goals count toward the limit.
+     */
+    public function getGoalLimit(Organization $organization): ?int
+    {
+        return null;
+    }
+
     /**
      * Check if the organization is blocked
      * A blocked organization is an organization that has more than 1 non-placeholder member but no subscription/trial