Support cycles in the serialized IR structure

[radeusgd]

As part of #8652 I'm extending the bindings map with additional metadata that results in a cycle within the IR. Currently, that causes the IR serialization to fail with StackOverflow, because there is no support for cycles.

We want to expand our IR serialization to support such looping.

I've added a few tests demonstrating the expected behaviour on the branch wip/persistance-loops.