Unified secrets management

As recently experienced, having a bus factor of 1 for critical items like secrets can become a huge blocker for even the most basic of tasks. Given the occasionally transient nature of contributors, we want to make things simple to use and secure.

We need a secrets management solution that:

1. Allows OpCode users and contributors to easily retrieve secrets they are authorized access to.
2. Facilitates automation so that deployments and other system operations can be abstracted so an individual access isn't required to keep things moving forward.
3. Allows revocation of access to secrets.

该 issue 没有指定任何文件、测试或入口点。首先，针对所述的三个要求定义并比较一种 secrets-management 方案，然后记录所选设计、访问和撤销流程，以及自动化如何在没有个人访问权限的情况下运行。