chore(nim): use compile-time string formatting #13945
Merged
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Nim 2.2 comes with compile-time string formatting that doesn't raise exceptions if the format string is invalid - instead a compile-time error is given.
This PR introduces a backport of that feature which improves performance and reduces the risk that formatting causes the app to crash and will help migrating the codebase to newer nim versions that track exceptions more carefully.
There should be no change in runtime behavior (except formatting being a bit faster)