Use std::string_view and fmtlib across all libraries (#3402)

- Twine, StringRef, Format, and NativeFormatting have been removed
- Logging now uses fmtlib style formatting
- Nearly all uses of wpi::outs/errs have been replaced with fmt::print() or
std::puts()/std::fputs() (for unformatted strings).
- A wpi/fmt/raw_ostream.h header has been added to enable
fmt::print() with wpi::raw_ostream

simulation/halsim_ds_socket/src/dev/native/cpp/main.cpp

@@ -6,8 +6,6 @@
 
 #include <hal/DriverStation.h>
 #include <hal/HALBase.h>
-#include <wpi/Format.h>
-#include <wpi/raw_ostream.h>
 
 extern "C" int HALSIM_InitExtension(void);