Operators: Turn examples into documentation

We have the example directories in the operators, which are very useful for us devs to quicky deploy an instance of something. But the examples are not tested.

With the getting started guide we started moving examples into the docs and testing them. It would make sense to keep doing this, with the other examples as well. There are specific examples which deploy an instance + OPA etc., which we could turn into specific docs guides.

This would be an epic and needs to be done for all operators.

首先检查 operator 示例目录和入门指南，其中的示例已经开始迁移到经过测试的文档中。盘点所有 operator 中剩余的示例，确定哪些示例应转变为具体指南，并将完成定义为每个选定的示例都已编写文档并完成测试。