Clang: Make clazy UI more fine-grained

...so that specific checks can be enabled/disabled.

This replaces the level radio buttons in Tools > Options > C++ > Code
Model > "Manage..." > Tab: Clazy.

Task-number: QTCREATORBUG-21120
Change-Id: If468d79d3c309b287b4105d83ac31f0b1489c71c
Reviewed-by: Ivan Donchevskii <ivan.donchevskii@qt.io>

src/plugins/cpptools/cpptools.qbs

@@ -158,6 +158,7 @@ Project {
             "cppsourceprocessor.h",
             "cpptools.qrc",
             "cpptools_clangtidychecks.h",
+            "cpptools_clazychecks.h",
             "cpptools_global.h",
             "cpptools_utils.h",
             "cpptoolsbridge.cpp",