Add API timeout for self-hosted LLMs

[Belerafon]

Roo Code often emits API Socket timeout errors when using self-hosted, slow LLMs — either while reading a large file or even during the initial prompt phase. Yet these slow models can be usable in autonomous (e.g. overnight) scenarios for working on some private code source. It would be great to have a user-tunable setting to configure the API timeout for self-hosted providers (OpenAI-compatible, Ollama, LMStudio, etc.). The timeout can be up to 30 minutes to allow big file chunks or prompts to be fully processed. This way, even an older laptop could produce meaningful results overnight with roo code.