New Module: gio_mime (#7271)

* gio_mime: new module

* multiple changes

- fixed gio_mime module utils handler detection
- add message to test helper assertion
- add unit test

* gio mime output uses unicode smart quotes

* test helper: do not use skip/xfail reason messages - break in old pytest

* Update plugins/modules/gio_mime.py

Co-authored-by: Felix Fontein <felix@fontein.de>

* change exist variables to meet standards

---------

Co-authored-by: Felix Fontein <felix@fontein.de>

plugins/module_utils/gio_mime.py

@@ -0,0 +1,32 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2022, Alexei Znamensky <russoz@gmail.com>
+# 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
+
+from ansible_collections.community.general.plugins.module_utils.cmd_runner import CmdRunner, cmd_runner_fmt
+
+
+def gio_mime_runner(module, **kwargs):
+    return CmdRunner(
+        module,
+        command=['gio', 'mime'],
+        arg_formats=dict(
+            mime_type=cmd_runner_fmt.as_list(),
+            handler=cmd_runner_fmt.as_list(),
+        ),
+        **kwargs
+    )
+
+
+def gio_mime_get(runner, mime_type):
+    def process(rc, out, err):
+        if err.startswith("No default applications for"):
+            return None
+        out = out.splitlines()[0]
+        return out.split()[-1]
+
+    with runner("mime_type", output_process=process) as ctx:
+        return ctx.run(mime_type=mime_type)