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/cpptools/CMakeLists.txt

@@ -16,7 +16,6 @@ add_qtc_plugin(CppTools
     clangdiagnosticconfigsmodel.cpp clangdiagnosticconfigsmodel.h
     clangdiagnosticconfigsselectionwidget.cpp clangdiagnosticconfigsselectionwidget.h
     clangdiagnosticconfigswidget.cpp clangdiagnosticconfigswidget.h clangdiagnosticconfigswidget.ui
-    clazychecks.ui
     compileroptionsbuilder.cpp compileroptionsbuilder.h
     cppbuiltinmodelmanagersupport.cpp cppbuiltinmodelmanagersupport.h
     cppcanonicalsymbol.cpp cppcanonicalsymbol.h
@@ -70,8 +69,6 @@ add_qtc_plugin(CppTools
     cppsemanticinfoupdater.cpp cppsemanticinfoupdater.h
     cppsourceprocessor.cpp cppsourceprocessor.h
     cppsymbolinfo.h
-    cpptools_clangtidychecks.h
-    cpptools_clazychecks.h
     cpptools_global.h
     cpptools_utils.h
     cpptoolsbridge.cpp cpptoolsbridge.h
@@ -104,7 +101,6 @@ add_qtc_plugin(CppTools
     stringtable.cpp stringtable.h
     symbolfinder.cpp symbolfinder.h
     symbolsfindfilter.cpp symbolsfindfilter.h
-    tidychecks.ui
     typehierarchybuilder.cpp typehierarchybuilder.h
     usages.h
     wrappablelineedit.cpp wrappablelineedit.h