Core/Utils: Migrate further to Utils::Id

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

Change-Id: I8c44590f7b988b3770ecdc177c40783e12353e66
(cherry picked from commit 430a33dcd9)
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/mcusupport/mcusupportrunconfiguration.cpp

@@ -64,7 +64,7 @@ class FlashAndRunConfiguration final : public RunConfiguration
     Q_DECLARE_TR_FUNCTIONS(McuSupport::Internal::FlashAndRunConfiguration)
 
 public:
-    FlashAndRunConfiguration(Target *target, Core::Id id)
+    FlashAndRunConfiguration(Target *target, Utils::Id id)
         : RunConfiguration(target, id)
     {
         auto flashAndRunParameters = addAspect<BaseStringAspect>();