Add Friendli serverless endpoints provider

[minpeter]

Summary

Adds Friendli serverless endpoints as a new provider to models.dev.

Changes

• Add provider configuration using @ai-sdk/openai-compatible
• Implement auto-generation script (generate-friendli.ts)
• Add 11 models from Friendli API:
  • 4 models with TOKEN-based pricing (Llama 3.3, Llama 3.1, Qwen3-235B, EXAONE)
  • 7 models with SECOND-based pricing (Llama 4, Qwen3, DeepSeek-R1, GLM - cost section omitted)

Technical Details

• Auto-infer model families (llama-3.3, llama-3.1, llama-4, qwen3, deepseek-r1, exaone, glm-4)
• Auto-detect open_weights from HuggingFace URLs and licenses
• Handle SECOND-based pricing by omitting cost section (per-token pricing only supported)
• Follow Venice.ai pattern for auto-generation with merge logic

Testing

• Script runs successfully with --dry-run
• All 11 models generated
• Validation passes (bun validate)
• Schema validation successful

🤖 Generated with Claude Code