📝 Add an example of command to run the `generate-client.sh` with uv

[AllenFang]

Since we use uv to manage the py package and virtual env, so suggest to use uv to executing client generation for avoiding the packages or python command not found,

[github-actions[bot]]

As this PR has been waiting for the original user for a while but seems to be inactive, it's now going to be closed. But if there's anyone interested, feel free to create a new PR.