[wpinet] Move network portions of wpiutil into new wpinet library (#4077)

wpinet/src/dev/native/cpp/main.cpp

@@ -0,0 +1,11 @@
+// Copyright (c) FIRST and other WPILib contributors.
+// Open Source Software; you can modify and/or share it under the terms of
+// the WPILib BSD license file in the root directory of this project.
+
+#include <fmt/core.h>
+#include <wpi/SmallString.h>
+
+int main() {
+  wpi::SmallString<128> v1("Hello");
+  fmt::print("{}\n", v1.str());
+}