Automatic modernization (clang-tidy --fix)

Using these rules:

*-use-auto,
*-move-const-arg,
*-use-emplace,
*-use-equals-default,
*-use-nullptr,
*-use-override,
clang-analyzer-core.CallAndMessage,
clang-analyzer-optin.cplusplus.VirtualCall,
cppcoreguidelines-explicit-virtual-functions,
cppcoreguidelines-pro-type-const-cast,
cppcoreguidelines-pro-type-static-cast-downcast,
google-readability-avoid-underscore-in-googletest-name,
google-runtime-references,
hicpp-noexcept-move,
llvm-qualified-auto,
misc-uniqueptr-reset-release,
modernize-avoid-bind,
modernize-make-unique,
modernize-pass-by-value,
modernize-raw-string-literal,
modernize-use-using,
performance-for-range-copy,
readability-avoid-const-params-in-decls,
readability-const-return-type,
readability-non-const-parameter,
readability-container-size-empty,
readability-delete-null-pointer,
readability-inconsistent-declaration-parameter-name,
readability-qualified-auto,
readability-redundant-member-init,
readability-simplify-boolean-expr,