Build one package with three elf_test_runner components: one for each of the binaries that the test harness invokes on the target. (Though currently only tests that use "dart" are setup.)
Create includable CML shards for the capabilites required by the AOT and JIT VMs.
Fold test_runner's fuchsia_cfv2.dart back into fuchsia.dart.
TEST=ci
Bug: https://github.com/dart-lang/sdk/issues/38752
Change-Id: I7bd8d43d184cbcb11903c7aed77ce31fb30cb894
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/332451
Commit-Queue: Ryan Macnak <rmacnak@google.com>
Reviewed-by: Zijie He <zijiehe@google.com>
Reviewed-by: Alexander Thomas <athom@google.com>
