sets clang-tidy configuration in cmake to get automatic checking

Signed-off-by: Matthieu Gallien <matthieu.gallien@nextcloud.com>

CMakeLists.txt

@@ -2,6 +2,11 @@ cmake_minimum_required(VERSION 3.16)
 set(CMAKE_CXX_STANDARD 17)
 cmake_policy(SET CMP0071 NEW) # Enable use of QtQuick compiler/generated code
 
+find_program(CLANG_TIDY_EXE NAMES "clang-tidy")
+if (CLANG_TIDY_EXE)
+    set(CMAKE_CXX_CLANG_TIDY ${CLANG_TIDY_EXE} -checks=-*,modernize-use-auto,modernize-use-using,modernize-use-nodiscard,modernize-use-nullptr,modernize-use-override,cppcoreguidelines-pro-type-static-cast-downcast,modernize-use-default-member-init,cppcoreguidelines-pro-type-member-init,cppcoreguidelines-init-variables)
+endif()
+
 project(client)
 
 include(FeatureSummary)