Tools calling support with OpenAILanguageModel

[airy10]

OpenAILanguageModel is missing the loop to properly send tools responses back to OpenAI

I've added some basic implementation in my fork at https://github.com/airy10/AnyLanguageModel

I'm not familiar with OpenAI API so it might not be correct and it's probably not complete, but I could test it with some of my MCP server (https://github.com/airy10/GedcomMCP) and my FoundationModels MCPToolBridge which let FoundationModels discover and bridge tools from MCP servers (https://github.com/airy10/AppleFoundationMCPTool )
It seems to work fine with this configuration and using some OpenRouter models

[mattt]

Resolved by #49. Thank you, @airy10!