Add setup.py for packaging

[simon824]

We can test python packages through step1+step2.

step 1: manually install dependencies (this step is not required after release)

Since dependencies with specified version numbers in the test-pypi repository may be missing, we need to manually install the dependencies first.

pip3 install -r requirement.txt

• requirement.txt

openai==0.28.1
retry==0.9.2
tiktoken==0.5.1
nltk==3.8.1
gradio==4.19.2

decorator==5.1.1
requests==2.31.0
setuptools==67.6.1
urllib3==2.0.7

step 2: install hugegraph-python,hugegraph-llm

After that, we can install hugegraph-python,hugegraph-llm through the following command.

pip install -i https://test.pypi.org/simple/ hugegraph-python==1.3.0.2
pip install -i https://test.pypi.org/simple/ hugegraph-llm==1.3.0.2

[github-actions]

license-eye has totally checked 108 files.

Valid	Invalid	Ignored	Fixed
86	4	18	0

Click to see the invalid file list

• hugegraph-llm/MANIFEST.in
• hugegraph-llm/setup.py
• hugegraph-python-client/init.py
• hugegraph-python-client/setup.py

[liuxiaocs7]

LGTM, i test ok by following the steps with some tiny comments