Add `--host` cli option support

[0400H]

The default setting is to open a local port, which cannot be accessed remotely.

trackio show
    * Trackio UI launched at: http://127.0.0.1:7860/?write_token=xxxxxxxxxxxxxxxxxxxxx

Could add an option --host 0.0.0.0 to support remote access?

trackio show --host 0.0.0.0
    * Trackio UI launched at: http://127.0.0.1:7860/?write_token=xxxxxxxxxxxxxxxxxxxxx
    * Trackio UI launched at: http://192.168.0.123:7860/?write_token=xxxxxxxxxxxxxxxxxxxxx

[0400H]

find a method:

• https://huggingface.co/docs/trackio/environment_variables#gradio-environment-variables

export GRADIO_SERVER_NAME="0.0.0.0"
export GRADIO_SERVER_PORT=8000

Perhaps it would be better to add these environment variables here.

• https://github.com/gradio-app/trackio?tab=readme-ov-file#dashboard
• https://huggingface.co/docs/trackio/quickstart#dashboard