feat: add Qwen(Tongyi) model component

[niuguy]

Qwen (Tongyi), developed by Alibaba, is emerging as one of the most competitive large language models (LLMs) in China. Integrating Qwen into Langflow would empower users in China, who often face restricted access to models like OpenAI and Anthropic, to leverage Langflow’s capabilities effectively.

[codspeed-hq]

CodSpeed Performance Report

Merging #5439 will improve performances by ×2.5

_{Comparing niuguy:qwen (e9c2e39) with main (bd7f913)}

Summary

⚡ 1 improvements
✅ 14 untouched benchmarks

Benchmarks breakdown

	Benchmark	main	niuguy:qwen	Change
⚡	test_setup_llm_caching	2.9 ms	1.2 ms	×2.5