[clang-tidy] deactivate some C++ checks not fitting

* cppcoreguidelines-avoid-c-arrays: most of our code is in C, so the C++
  components must use these to call the library functions
* modernize-pass-by-value: not compatible with the lowest supported C++
  standard of the project

.clang-tidy

@@ -33,6 +33,7 @@ Checks: >
     -clang-analyzer-valist.Uninitialized,
     -cppcoreguidelines-pro-bounds-array-to-pointer-decay,
     -cppcoreguidelines-owning-memory,
+    -cppcoreguidelines-avoid-c-arrays,
     -cppcoreguidelines-avoid-do-while,
     -cppcoreguidelines-avoid-magic-numbers,
     -cppcoreguidelines-avoid-non-const-global-variables,
@@ -57,6 +58,7 @@ Checks: >
     -modernize-use-trailing-return-type,
     -modernize-return-braced-init-list,
     -modernize-macro-to-enum,
+    -modernize-pass-by-value,
     -readability-braces-around-statements,
     -readability-function-cognitive-complexity,
     -readability-identifier-length,