Thinking toggle support for Qwen related models

**Is your feature request related to a problem? Please describe.**
Cannot toggle thinking in Qwen models, when we do it through the user prompt way, it still gives out opening and closing think tags.

**Describe the solution you'd like**
Support for params/ flags like reasoning_budget, chat_template_kwargs parameters.
**Describe alternatives you've considered**
N/A

**Additional context**
This problem has been a long point of discussion in the upstream project (llama.cpp) too and I am hoping for it to trickle down here and have support for it, noting that the PRs have been merged and llama.cpp has controls over thinking now.