feat: add A2A Symfony bundle recipe (#2053)

vbcherepanov/a2a-symfony-bundle/1.0/config/packages/a2a.yaml

@@ -0,0 +1,4 @@
+# a2a:
+#     executor: App\Agent\MyExecutor
+#     card_file: '%kernel.project_dir%/config/agent-card.json'
+#     public_url: '%env(A2A_PUBLIC_URL)%'

vbcherepanov/a2a-symfony-bundle/1.0/config/routes/a2a.yaml

@@ -0,0 +1,3 @@
+a2a:
+    resource: .
+    type: a2a

vbcherepanov/a2a-symfony-bundle/1.0/manifest.json

@@ -0,0 +1,8 @@
+{
+    "bundles": {
+        "A2A\\Bundle\\A2ABundle": ["all"]
+    },
+    "copy-from-recipe": {
+        "config/": "%CONFIG_DIR%/"
+    }
+}