v3.0.0-beta.12

• 文档 (d475753) by: wanchun
• 文档搜索 (974cf2d) by: wanchun
• 更新文档思索 (e426de9) by: wanchun
• 贡献指南 (223f38b) by: wanchun

🚀 New Feature

• 插件开发文档和模板 (#135) (3b8af8a) by: harrywan