Add .github/copilot.yml configuration to allow connections to:
- api.openai.com (OpenAI API)
- oauth2.googleapis.com (Google OAuth)
- test.cognitiveservices.azure.com (Azure services)
- Additional related domains for full integration test support
This fixes firewall blocking issues when running integration tests.
Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>