3558 [camera] Added timeout to Android pre-capture sequence (cla: yes, p: camera, platform-android)

3562 [camera] Solves delay when using the zoom feature on iOS. (cla: yes, p: camera, platform-ios)

3591 [camera] Fix iOS rotation issue (cla: yes, p: camera, platform-ios, waiting for tree to go green)

3592 [camera] Fix example from README.md (cla: yes, p: camera, waiting for tree to go green)

3610 [camera_platform_interface] Stable null safety release. (cla: yes, nnbd, p: camera)

3641 [camera] Stable release for null safety. (cla: yes, nnbd, p: camera)