[3/n] [reconfigurator-sim] add an operation log #9365
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Add an operation log to the simulator, as well as ways to undo, redo and restore to the last operation. Modeled pretty directly after how Jujutsu's operation log works.
The biggest change here is that the current pointer is now managed by the simulator rather than reconfigurator-cli, so that it can be versioned as part of the operation.
Depends on: