[llvm] Add sanity test workflow for checking libc++ bots quickly. (PR #74267)

[Tobias Hieta via llvm-commits]

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@@ -0,0 +1,35 @@
+# A sanity check for the libc++ github actions runners. It simply attempts to schedule a job on each runner and
+# then prints some info about each runner.
+#
+# The runner sets are currently:
+#   - libcxx-runners-8-set
+#   - libcxx-runners-32-set
+
+# FIXME: Write this workflow
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tru wrote:

does this mean that this workflow is not complete, or is this just a forgotten comment.

https://github.com/llvm/llvm-project/pull/74267