Add default_without_diff callback (#7949)

* Add default_without_diff callback.

* Add examples and BOTMETA entry.

plugins/callback/default_without_diff.py

@@ -0,0 +1,46 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2024, Felix Fontein <felix@fontein.de>
+# GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+from __future__ import (absolute_import, division, print_function)
+__metaclass__ = type
+
+DOCUMENTATION = r'''
+  name: default_without_diff
+  type: stdout
+  short_description: The default ansible callback without diff output
+  version_added: 8.4.0
+  description:
+    - This is basically the default ansible callback plugin (P(ansible.builtin.default#callback)) without
+      showing diff output. This can be useful when using another callback which sends more detailed information
+      to another service, like the L(ARA, https://ara.recordsansible.org/) callback, and you want diff output
+      sent to that plugin but not shown on the console output.
+  author: Felix Fontein (@felixfontein)
+  extends_documentation_fragment:
+    - ansible.builtin.default_callback
+    - ansible.builtin.result_format_callback
+'''
+
+EXAMPLES = r'''
+# Enable callback in ansible.cfg:
+ansible_config: |
+  [defaults]
+  stdout_callback = community.general.default_without_diff
+
+# Enable callback with environment variables:
+environment_variable: |
+  ANSIBLE_STDOUT_CALLBACK=community.general.default_without_diff
+'''
+
+from ansible.plugins.callback.default import CallbackModule as Default
+
+
+class CallbackModule(Default):
+    CALLBACK_VERSION = 2.0
+    CALLBACK_TYPE = 'stdout'
+    CALLBACK_NAME = 'community.general.default_without_diff'
+
+    def v2_on_file_diff(self, result):
+        pass