feat: Add popular AI services

[nastyagrifon]

Description: Please add popular AI platforms to the list of checked services to monitor availability (Geo-blocking/DPI). These services are currently high-priority for many users.

Services to add:

• Google Gemini (gemini.google.com, generativelanguage.googleapis.com)
• OpenAI / ChatGPT (chatgpt.com, api.openai.com)
• Anthropic / Claude (claude.ai, api.anthropic.com)
• Claude Code (CLI tool connectivity)
• Microsoft Copilot (copilot.microsoft.com)

I'm happy to help with the implementation or open a PR if needed. Just let me know!