CMake: iOS: Enable automatic provisioning updates

By default xcodebuild does not try create / download a provisioning
profile for a project if a valid one does not exist locally
in ~/Library/MobileDevice/Provisioning Profiles, even if the
Xcode CODE_SIGN_STYLE attribute is set to Automatic.

Starting with Xcode 9, xcodebuild accepts a new
-allowProvisioningUpdates option.
When passed, xcodebuild will request a new provisioning profile
from Apple's servers for the current project and use it during
the build. The provisioning profile is only needed when building
for a real device, not the simulator.

When building an iOS project with qmake, the option is embedded in the
wrapping Makefile generated by qmake, so Qt Creator can simply call
make (which it does).

For CMake, there is no wrapping Makefile, so we need to pass the new
option explicitly as an additional build tool argument.

There might be cases where automatic provisioning is not desired,
which is why there is now a new checkbox in the CMake build step
configuration widget. It's default value is 'enabled', to match
qmake's behavior.

As an implementation detail, isiOS had to be moved to a header file so
it's accessible to both the build configuration and the build step.

Fixes: QTCREATORBUG-26246
Change-Id: Ic80cd965ba095d0ff379e13ad2ffb8c298c9f7c4
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>

src/plugins/cmakeprojectmanager/cmakebuildconfiguration.h

@@ -54,6 +54,7 @@ public:
     static Utils::FilePath
     shadowBuildDirectory(const Utils::FilePath &projectFilePath, const ProjectExplorer::Kit *k,
                          const QString &bcName, BuildConfiguration::BuildType buildType);
+    static bool isIos(const ProjectExplorer::Kit *k);
 
     // Context menu action:
     void buildTarget(const QString &buildTarget);