Feat/select event

[heiyexing]

PR includes

• [x] 新增 L7Editor 入口
• [x] 新增 Select 事件

[github-actions[bot]]

🎊 PR Preview 06fc24646433cfff441f68b5f6c07c634ef59552 has been successfully built and deployed to https://antvis-L7Draw-preview-pr-122.surge.sh

:clock1: Build time: 170.54s

_{🤖 By surge-preview}