ClangTools: Query the tools for supported checks

...instead of hardcoding them for a particular version of
clang-tidy/clazy.

While at it, move also the tidy/clazy widgets to ClangTools as this
simplifies feeding data to them.

Reduce also the built-in configs to a single one using clang-tidy's and
clazy's default checks as they look very reasonable and saves us some
porting effort. Also, our previous built-in configs were just too
numerous.

Change-Id: Ib9297acb7810a940b86a23a8695530506a570394
Reviewed-by: Cristian Adam <cristian.adam@qt.io>

src/plugins/clangcodemodel/clangprojectsettingswidget.cpp

@@ -146,9 +146,13 @@ void ClangProjectSettingsWidget::syncOtherWidgetsToComboBox()
             widget->setEnabled(isCustom);
     }
 
-    m_ui.clangDiagnosticConfigsSelectionWidget->refresh(CppTools::diagnosticConfigsModel(),
-                                                        configIdForProject(m_projectSettings),
-                                                        /*showTidyClazyUi=*/false);
+    m_ui.clangDiagnosticConfigsSelectionWidget
+        ->refresh(CppTools::diagnosticConfigsModel(),
+                  configIdForProject(m_projectSettings),
+                  [](const CppTools::ClangDiagnosticConfigs &configs,
+                     const Core::Id &configToSelect) {
+                      return new CppTools::ClangDiagnosticConfigsWidget(configs, configToSelect);
+                  });
 }
 
 } // namespace Internal