61509 Add a E2E based performance test case (a: tests, cla: yes, framework, team, waiting for tree to go green)

61517 [CONTRIBUTING.md] adds Contributing to Flutter article link (cla: yes, team, waiting for tree to go green)

61552 Verbose process exceptions (cla: yes, team, tool, waiting for tree to go green)

61554 Reland “Branch out android platform view perf testing (#60238)” (cla: yes, team)

61564 ✒ Spell Check All .md Files Related to Flutter 💙 (a: internationalization, cla: yes, d: examples, team, tool, waiting for tree to go green)

61573 Remove run_machine_concurrent_hot_reload device lab test (cla: yes, team)