feat: Greenstone

[zly2006]

Easter eggs

Inspired by Mojang's April Fool's versions.

Your redstone could turn green on April 1. Your redstone supports la Commune de Paris on March 28.

Related Issues/相关的 issue

n/a

Checklist/清单

• [ ] The issues this PR addresses are related to each other/此 PR 解决的 issue 是相关的
• [ ] My changes are all related to the related issue above/我的修改都与上方的相关 issue 有关
• [x] My changes generate no new warnings/我的修改没有产生新的警告
• [x] My code builds and runs on my machine/我的代码在我的电脑上可以编译和运行
• [ ] I documented my code/我已经为我的代码添加了注释/文档

Screenshots