Add CI status and repository stats badges to README

[Copilot]

Description of Changes

Added 10 badges to README.md positioned immediately after the title:

CI/CD Status (4 badges):

• PR Validation workflow status
• Release workflow status
• GitHub Pages deployment status
• CodeQL security scanning status

Repository Stats (6 badges):

• License (Apache-2.0)
• Latest release version
• GitHub stars (social style)
• GitHub forks (social style)
• Open issues count
• .NET 8.0 requirement

Rationale behind Changes

Provides immediate visibility into:

• Build/deployment health via GitHub Actions workflow badges
• Project activity and community engagement via social metrics
• License and version information for quick reference
• Security posture via CodeQL scanning badge

All badges are clickable, link to relevant pages, and update automatically based on repository activity.

Suggested Testing Steps

1. View the README on the PR to verify badges render correctly
2. Click each badge to confirm links work:
   • Workflow badges → GitHub Actions pages
   • Stats badges → Respective GitHub pages
   • License → LICENSE file
   • .NET badge → .NET website
3. Merge to main and verify badges show correct status

Original prompt

show the CI status and other stats within the readme with badges

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