[feat]Add monitoring support for Ollama LLM runtime

[Duansg]

What's changed?

• Add monitoring support for Ollama LLM runtime platform.
• Introduce a new Ollama monitor type to collect runtime metrics via Ollama API.
• Support monitoring basic information such as:
  • Ollama service availability
  • Model runtime status
  • Basic API response metrics
• Add the corresponding monitoring template and documentation.

This allows users to monitor local or remote Ollama LLM services directly in HertzBeat.

Checklist

• I have read the Contributing Guide
• I have written the necessary doc or comment.
• I have added the necessary unit tests and all cases have passed.

Add or update API

• I have added the necessary e2e tests and all cases have passed.

[tomsun28]

lgtm