[feat] engines: add paid yandex search api (#6349)

searx/settings.yml

@@ -2584,6 +2584,16 @@ engines:
     shortcut: ydi
     disabled: true
 
+  - name: yandex api
+    engine: yandex_api
+    categories: [general, web]
+    shortcut: yda
+    inactive: true
+    # api_key: ""
+    # folder_id: ""
+    # search_type: SEARCH_TYPE_COM
+    # l10n: LOCALIZATION_EN
+
   - name: yandex music
     engine: yandex_music
     network: yandex