Devlog2

Add new AI providers:

• Gemini
• Groq
• HackClub

Add new AI models:

• gemini-2.5-flash
• gemini-2.5-flash-lite
• llama-3.3-70b-instruct
• llama-3.1-8b-instant
• gpt-oss-120b
• gpt-oss-20b
• qwen3.6-27b

Other changes:

• Add requirements to README.md
• Add function to test AI model availability
• Create list of available AI providers