llm.api 0.1.1

• Initial CRAN submission.
• Add Moonshot (Kimi) provider alongside OpenAI, Anthropic, and Ollama. Detected by base URL or model name; key resolution falls back to OPENAI_API_KEY since the API is OpenAI-compatible.
• Fix conversation history bug in agent() where the final assistant message was not appended to the returned history when the agent loop exited without further tool calls. Affected all providers but was most visible with non-Claude models.
• Drop the "local" provider and chat_local() / list_local_models() exports. Direct llama.cpp inference via the localLLM package is no longer supported; use provider = "ollama" instead.