71760 Make macrobenchmarks buildable for macos (a: tests, cla: yes, platform-mac, team)

71761 Check in manual_tests gitignores (cla: yes, platform-mac, team)

71764 Move embedding and linking macOS Flutter frameworks into the tool (cla: yes, team, tool)

71852 Fix text direction logic for material icon variants (cla: yes, f: material design, framework, team, waiting for tree to go green)

71853 Add previews for CupertinoIcons (cla: yes, f: cupertino, f: material design, framework, team, waiting for tree to go green)

71860 Do not add CI build settings to macOS (cla: yes, team, tool)