60929 Adding CupertinoApp Sample templates (cla: yes, d: api docs, d: examples, documentation, f: cupertino, framework, team, waiting for tree to go green)

60930 Add embedderId to PointerEvent (cla: yes, framework)

60932 [flutter_tools] add sdk constraint to plugin/package templates (cla: yes, tool)

60934 Skip Audit - Scheduler and Services libraries (a: quality, a: tests, cla: yes, framework, team, waiting for tree to go green)

60936 Skip Audit - Widgets Library (a: quality, a: tests, cla: yes, framework, team, waiting for tree to go green)

60951 Roll Engine from f8bbcc396ba9 to 0e9b2508439a (24 revisions) (cla: yes, waiting for tree to go green)