New branch model enabled | 新分支模型启用

[LearningGp]

Attention please. We have updated our branching model to support parallel development. The 1.8 branch will serve as the default branch for ongoing evolution in the traffic protection domain, while the 2.0 branch will be used as a parallel development branch for progression in the traffic governance domain. Everyone should choose the appropriate branch to merge into based on the domain of the feature. We will regularly synchronize commits from the 1.8 branch to the 2.0 branch. This branching model will continue until several stable versions in the 2.0 series have been released. If anyone has suggestions regarding this branching model, please head over to the discussion #3301. Lastly, we welcome everyone to actively participate and contribute to the community! 🚀

我们启用了新的分支模型来支撑并行开发。其中 1.8 分支将会被作为默认分支，用于 Sentinel 在流量防护领域的持续演进。同时 2.0 分支会作为并行开发分支来支撑 Sentinel 在流量治理领域的演进。大家需要在提交 PR 时选择所属领域对应的分支来合并。我们会定期将 1.8 分支上的提交同步到 2.0 分支中。这种分支模型将会持续到 2.0 系列发布了多个正式版本之后。如果对于这个新的分支模型有任何建议，欢迎移步讨论区 #3301 参与讨论。最后欢迎大家积极参与社区贡献！ 🚀