ProjectExplorer: Report project-specific kit errors/warnings

Report project-specific warnings about the kit used in Project Mode.
E.g. a python project should not complain about missing toolchains,
while a qmake project should.

Change-Id: I5ce6742683cdeffc7ff3f1a3e8f0b89aee9aa0b4
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

src/plugins/projectexplorer/task.cpp

@@ -25,13 +25,15 @@
 
 #include "task.h"
 
+#include "projectexplorerconstants.h"
+
 #include <app/app_version.h>
 #include <texteditor/textmark.h>
+
+#include <utils/algorithm.h>
 #include <utils/utilsicons.h>
 #include <utils/qtcassert.h>
 
-#include "projectexplorerconstants.h"
-
 #include <QTextStream>
 
 namespace ProjectExplorer
@@ -174,4 +176,9 @@ QString toHtml(const QList<Task> &issues)
     return result;
 }
 
+bool containsType(const QList<Task> &issues, Task::TaskType type)
+{
+    return Utils::contains(issues, [type](const Task &t) { return t.type == type; });
+}
+
 } // namespace ProjectExplorer