Add GitHub issue templates for bug reports and feature requests

[Copilot]

Issue templates standardize bug reports and feature requests while directing security vulnerabilities and discussions to appropriate channels.

Templates Added

• Bug Report (bug_report.yml) - Form-based template capturing:

  • Reproduction steps and expected/actual behavior
  • VHDLTest version, simulator type/version, OS, .NET version
  • 🐛 icon for visual identification

• Feature Request (feature_request.yml) - Structured template with:

  • Problem statement, proposed solution, alternatives
  • Feature area classification and priority
  • ✨ icon for visual identification

Configuration

Template config (config.yml) disables blank issues and adds contact links:

• 💬 GitHub Discussions for questions and ideas
• 🔒 Security Advisories for vulnerability reports (prevents public disclosure)

All templates require Code of Conduct acknowledgment before submission.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Issue templates should be created</issue_title>
<issue_description>Issue templates should be created for bug reports and feature requests.

The template configuration should be updated to disable blank issues, and to have contact links for discussions and security advisories.

Standard icons should be added for the contact links and template names.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Issue templates should be created #47

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