Proposal: add a bilingual README hero for lark-cli

[oil-oil]

Hi maintainers,

I like lark-cli and wanted to try contributing a small improvement to its README.

I made a lightweight bilingual SVG hero for the English and Chinese READMEs. It follows the existing Lark/Feishu colors, keeps the install command visible, and is designed to render cleanly on GitHub at both desktop and narrow widths.

Before opening a PR, I wanted to ask whether this direction would be useful for the project.

English preview

Chinese preview

If the direction is welcome, I can prepare a focused docs PR that:

• adds separate English and Chinese SVG files;
• keeps both READMEs synchronized;
• uses the asset location and official logo source you prefer;
• removes or simplifies the numeric statistics if you would rather avoid maintaining values inside an image.

Thank you for taking a look.