feat: Introduce gradio for creating interactive and visual demo

[simon824]

export PYTHONPATH=${PROJECT_ROOT_DIR}/hugegraph-llm/src:${PROJECT_ROOT_DIR}/hugegraph-python-client/src python3 ./hugegraph-llm/src/hugegraph_llm/utils/gradio_demo.py 

[github-actions]

Dependency Review

The following issues were found:

• ❌ 1 vulnerable package(s)
• ✅ 0 package(s) with incompatible licenses
• ✅ 0 package(s) with invalid SPDX license definitions
• ✅ 0 package(s) with unknown licenses.

See the Details below.

Vulnerabilities

hugegraph-llm/requirements.txt

Name	Version	Vulnerability	Severity
gradio	4.19.1	Gradio apps vulnerable to timing attacks to guess password	critical

Scanned Manifest Files

hugegraph-llm/requirements.txt

• gradio@4.19.1