Enhance documentation templates

[marko-stanojevic]

Description

This pull request introduces several improvements to the documentation templates, CI/CD workflows, and release automation for the PowerShell module project. The main changes include enhanced documentation templates, improved handling of release and publishing workflows, and the addition of a labeling job in CI. These updates aim to make the project easier to maintain, more robust, and more user-friendly for both contributors and end-users.

Documentation and Template Enhancements:

• Added an "About" section and improved introductory content in the README_template.md to better describe the module's purpose and benefits.
• Added a new getting-started_template.md with sections for overview, features, workflows, best practices, and troubleshooting, providing a comprehensive starting point for users.
• Updated workflow to use the new documentation templates and ensure placeholders are correctly replaced with module-specific information. [1] [2]

CI/CD and Release Workflow Improvements:

• Improved the release workflow to use the correct secret for publishing to the PowerShell Gallery and refactored environment variable usage for better security and clarity.
• Enhanced the ps-release action to handle the case where no previous tag exists when generating release notes, and added support for an optional PSGallery API key secret. [1] [2] [3]

Continuous Integration Enhancements:

• Added a new "Label Changes" job to the CI workflow to automatically apply labels to pull requests, improving project organization and review efficiency.

Testing Improvements:

• Updated integration tests to require at least one public function file instead of exactly one, making tests more flexible as the module grows.

Documentation Structure Refinement:

• Refined documentation links and structure in the README_template.md, consolidating example and getting started sections for clarity.

Type of Change

• Bug fix
• New feature
• Breaking change
• Documentation update
• Code quality improvement (refactoring, tests, performance)