Add FormatStringConverter utility class that is capable of converting
printf-style format strings into std::print-style format strings along
with recording a set of casts to wrap the arguments as required and
removing now-unnecessary calls to std::string::c_str() and
std::string::data()
Use FormatStringConverter to implement a new clang-tidy check that is
capable of converting calls to printf, fprintf, absl::PrintF,
absl::FPrintF, or any functions configured by an option to calls to
std::print and std::println, or other functions configured by options.
In other words, the check turns:
fprintf(stderr, "The %s is %3d\n", description.c_str(), value);
into:
std::println(stderr, "The {} is {:3}", description, value);
if it can.
std::print and std::println can do almost anything that standard printf
can, but the conversion has some some limitations that are described in
the documentation. If conversion is not possible then the call remains
unchanged.
Depends on D153716