Adding test to ensure that any added role gets a README file

[jwlodek]

No description provided.

[Copilot]

Pull request overview

This PR adds a new test to ensure that every device role has a README.md file, modernizes the test_device_roles.py file to use pathlib instead of os, and adds configuration updates to exclude the collections/ansible_collections/ directory from various linters and formatters. A new GitHub Actions workflow is also introduced to validate configurations.

Changes:

• Added test to verify each device role has a README.md file
• Modernized test_device_roles.py to use pathlib instead of os module
• Added collections/ansible_collections/ exclusions to ruff.toml, .pre-commit-config.yaml, and .ansible-lint
• Created new GitHub Actions workflow for validating module vars, device roles, and example configs
• Added testpaths configuration to pytest.ini and indent-width to ruff.toml

Reviewed changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tests/test_device_roles.py	Modernized to use pathlib, renamed parameters to device_role_name, and added test for README.md existence
ruff.toml	Added exclusion for collections/ansible_collections/ and indent-width configuration
pytest.ini	Added testpaths configuration to specify tests directory
.pre-commit-config.yaml	Added global exclusion pattern for collections/ansible_collections/
.ansible-lint	Added collections/ansible_collections/ to exclude_paths
.github/workflows/validate_configs.yml	New workflow file with three sequential jobs for validating different configuration types

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