New lookup plug-in: Bitwarden Secrets Manager (#6389)

* add Bitwarden Secrets Manager lookup

* fix pep8 and yamllint complaints

* fix version_added, add maintainer and copyright notice

* document BWS_ACCESS_TOKEN env var and declare as required

* avoid returning nested list

* update 'value of a secret' example after f6c4492c

* update copyright notice in bitwarden_secrets_manager plugin

thx felixfontein

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

* rename classes to distinguish from existing bw plugin

* use AnsibleLookupError, formatting

* bump version_added to 7.0.0

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

* ci fix: python style guide calls for excessive blank lines

https://peps.python.org/pep-0008/#blank-lines

* first attempt at unit tests for bws lookup

* ci fix: remove trailing newline

* attempt to fix tests object not callable error

* address formatting, tests and pyright suggestions

* reduce scope of mocked code for more real test coverage

only the actual bws CLI call is mocked now, this should enable the
exception thrown test to succeed if I didn't add new problems

* fix undefined variable 'expected_rc'

* fix mocked _run method to return correct data types

* keep list of one element for test case comparison

* bump version_added to 7.2.0

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

---------

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

.github/BOTMETA.yml

@@ -204,6 +204,8 @@ files:
     maintainers: ddelnano shinuza
   $lookups/:
     labels: lookups
+  $lookups/bitwarden_secrets_manager.py:
+    maintainers: jantari
   $lookups/bitwarden.py:
     maintainers: lungj
   $lookups/cartesian.py: {}