Previously, we were using 8.0.0rc1.
In particular, this upgrade means we need to explicitly
import more rules, as they've been moved out of the core bazel repo.
We've hardcoded the tilde in a lot of places :(
This improves performance on Windows and gets us ready for Bazel 8.
We need an upgrade of rules_rust for this to work.
* The relative path to misc doesn't work when running from another repo
* The buildifier dependency is not available from other repos,
therefore we can't pull in //misc/bazel without further refactoring.
Therefore, inline the runfiles snippet here.
