CMakePM: Add issue icon and tooltip description on project failure

If a project fails to load it will be displayed with a warning icon.

If the CMake configuration fails and the backup configuration is
restored, the project is also marked with a warning icon.

Change-Id: I95ccc5d171f5b789fe317fbb1da9e13dcd81a5dd
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/cmakeprojectmanager/cmakeproject.cpp

@@ -26,8 +26,8 @@
 #include "cmakeproject.h"
 
 #include "cmakebuildconfiguration.h"
-#include "cmakebuildsystem.h"
 #include "cmakebuildstep.h"
+#include "cmakebuildsystem.h"
 #include "cmakekitinformation.h"
 #include "cmakeprojectconstants.h"
 #include "cmakeprojectimporter.h"
@@ -75,6 +75,8 @@ Tasks CMakeProject::projectIssues(const Kit *k) const
     if (ToolChainKitAspect::toolChains(k).isEmpty())
         result.append(createProjectTask(Task::TaskType::Warning, tr("No compilers set in kit.")));
 
+    result.append(m_issues);
+
     return result;
 }
 
@@ -86,6 +88,16 @@ ProjectImporter *CMakeProject::projectImporter() const
     return m_projectImporter;
 }
 
+void CMakeProject::addIssue(IssueType type, const QString &text)
+{
+    m_issues.append(createProjectTask(type, text));
+}
+
+void CMakeProject::clearIssues()
+{
+    m_issues.clear();
+}
+
 bool CMakeProject::setupTarget(Target *t)
 {
     t->updateDefaultBuildConfigurations();