🤯🎉 Bump v3.0.0 and compatible with SD WebUI v1.6

[canisminor1990]

⚠️⚠️⚠️ Lobe Theme v3 is compatible with SD WebUI v1.6 and is not backwards compatible. Versions below < 1.6 should be moved to the branch legacy-sd-webui-1.5

Currently, it can run normally with the default configuration, but there are still some minor styling issues that need to be fixed.

[canisminor1990]

近期发现的一些 QA 问题，请检查你的插件分支是否为 main, 发现有多例因为切换到 dev 分支而造成的更新滞后的问题