Create a proto which will be used to represent a complete graph of executed spawns
Create a proto which will be used to represent a complete graph of executed spawns

PiperOrigin-RevId: 470259102
Change-Id: Iab6f96cf9656c052db8b06f845ec887ee48af49c

katre/bazel,katre/bazel,cushon/bazel,cushon/bazel,bazelbuild/bazel,katre/bazel,katre/bazel,bazelbuild/bazel,cushon/bazel,bazelbuild/bazel,cushon/bazel,bazelbuild/bazel,bazelbuild/bazel,cushon/bazel,katre/bazel,bazelbuild/bazel,katre/bazel,cushon/bazel