27731 [ci_yaml] Add autoroller builder (cla: yes, waiting for tree to go green)

27733 Roll Skia from a37001e2caec to a4953515af8e (2 revisions) (cla: yes, waiting for tree to go green)

27735 Roll Skia from a4953515af8e to 097a9a475951 (1 revision) (cla: yes, waiting for tree to go green)

27739 Prepare for updated avoid_classes_with_only_static_members lint (cla: yes, waiting for tree to go green, platform-web, needs tests)

27742 Add a run_tests flag that captures core dumps from engine unit tests and runs a GDB script (cla: yes, waiting for tree to go green)