jenkins_credentials: new module to manage Jenkins credentials (#10170)

* Added Jenkins credentials module to manage Jenkins credentials

* Added Jenkins credentials module to manage Jenkins credentials

* Added import error detection, adjusted indentation, and general enhancements.

* Added py3 requirement and set files value to avoid errors

* Added username to BOTMETA. Switched to format() instead of f strings to support py 2.7, improved delete function, and added function to read private key

* Remove redundant message

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

* Replaced requests with ansible.module_utils.urls, merged check domain and credential functions, and made minor adjustments to documentation

* Adjusted for py 2.7 compatibility

* Replaced command with state.

* Added managing credentials within a folder and made adjustments to documentation

* Added unit and integration tests, added token managament, and adjusted documentation.

* Added unit and integration tests, added token management, and adjusted documentation.(fix)

* Fix BOTMETA.yml

* Removed files and generate them at runtime.

* moved id and token checks to required_if

* Documentation changes, different test setup, and switched to Ansible testing tools

* Fixed typos

* Correct indentation.

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

---------

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

tests/integration/targets/jenkins_credential/aliases

@@ -0,0 +1,5 @@
+# Copyright (c) Ansible Project
+# 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
+
+unsupported