Utils: Add explicit conversion operator to QString to SmallStringView

Change-Id: I759651c6426337256b514055132806bf91e93e33
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/libs/utils/smallstringview.h

@@ -27,7 +27,7 @@
 
 #include "smallstringiterator.h"
 
-#include <QtGlobal>
+#include <QString>
 
 #include <cstring>
 #include <string>
@@ -116,6 +116,11 @@ public:
         return std::string(data(), size());
     }
 
+    explicit operator QString() const
+    {
+        return QString::fromUtf8(data(), int(size()));
+    }
+
     bool startsWith(SmallStringView subStringToSearch) const noexcept
     {
         if (size() >= subStringToSearch.size())