Core/Utils: Migrate further to Utils::Id

The coreplugin/id.h header is kept for downstream for now.

Change-Id: I8c44590f7b988b3770ecdc177c40783e12353e66
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/plugins/nim/project/nimrunconfiguration.cpp

@@ -46,7 +46,7 @@ class NimRunConfiguration final : public RunConfiguration
     Q_DECLARE_TR_FUNCTIONS(Nim::NimRunConfiguration)
 
 public:
-    NimRunConfiguration(Target *target, Core::Id id)
+    NimRunConfiguration(Target *target, Utils::Id id)
         : RunConfiguration(target, id)
     {
         addAspect<LocalEnvironmentAspect>(target);