This reverts commit 5257f029.

* Building shared C source code as part of the native build for platforms Android, iOS, Linux desktop, MacOS desktop, and Windows desktop.
* Sample code doing a synchronous FFI call.
* Sample code doing a long running synchronous FFI call on a helper isolate.
* Use of `package:ffigen` to generate the bindings.

Revert "[flutter_tools] [iOS] Change UIViewControllerBasedStatusBarAppearance to true to fix rotation status bar disappear in portrait" (#95747)

This reverts commit 6a3ea7eb.

This reverts commit 9038fac9.

This reverts commit 058dfd49.

[flutter_tools] [iOS] Change UIViewControllerBasedStatusBarAppearance to true to fix rotation status bar disappear in portrait (#92647)

* Revert "Mark last failing test after gradle update as flaky. (#91423)"

This reverts commit 46a52d03.

* Revert "fix android template for Gradle 7 (#91411)"

This reverts commit 51d06d53.

* Revert "Add explicit version for mac and windows openjdk. (#91408)"

This reverts commit bf429f27.

* Revert "Update the openjdk version used by linux android tests. (#91405)"

This reverts commit 2144ab8b.

* Revert "Migrate to Gradle 7.0.2 / AGP 7.0.1 (#90642)"

This reverts commit b6459f9b.

This reverts commit 28db5a0f.