Add missing ModelCatalogInterface and implement getCapabilities method

The rebase removed some files that were needed for the model catalog functionality.
This commit restores the missing interface and updates the abstract class to
implement all required methods.

Author: OskarStark

src/platform/src/AbstractModelCatalog.php

@@ -58,6 +58,18 @@ public function getModel(string $modelName): Model
         return $model;
     }
 
+    /**
+     * @return list<Capability>
+     */
+    public function getCapabilities(string $modelName): array
+    {
+        if (!isset($this->models[$modelName])) {
+            return [];
+        }
+
+        return $this->models[$modelName]['capabilities'];
+    }
+
     /**
      * @return array<string, array{class: string, capabilities: list<Capability>}>
      */

src/platform/src/ModelCatalogInterface.php

@@ -0,0 +1,30 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\AI\Platform;
+
+/**
+ * @author Oskar Stark <[email protected]>
+ */
+interface ModelCatalogInterface
+{
+    public function getModel(string $modelName): Model;
+
+    /**
+     * @return list<Capability>
+     */
+    public function getCapabilities(string $modelName): array;
+
+    /**
+     * @return array<string, array{class: string, capabilities: list<Capability>}>
+     */
+    public function getModels(): array;
+}