[wpiutil] Split C++ header files

ntcore/src/main/native/cpp/Handle.hpp

@@ -5,7 +5,7 @@
 #pragma once
 
 #include "wpi/nt/ntcore_c.h"
-#include "wpi/util/Synchronization.h"
+#include "wpi/util/Synchronization.hpp"
 
 namespace wpi::nt {
 
@@ -33,7 +33,7 @@ class Handle {
   enum { kIndexMax = 0xfffff };
 
   constexpr explicit Handle(NT_Handle handle) : m_handle(handle) {}
-  constexpr operator NT_Handle() const { return m_handle; }
+  constexpr operator NT_Handle() const { return m_handle; }  // NOLINT
 
   constexpr NT_Handle handle() const { return m_handle; }
 

ntcore/src/main/native/cpp/net/ClientImpl.cpp

@@ -13,16 +13,13 @@
 
 #include <fmt/format.h>
 
-#include "Handle.hpp"
 #include "Log.hpp"
 #include "Message.hpp"
-#include "NetworkInterface.hpp"
 #include "WireConnection.hpp"
 #include "WireEncoder.hpp"
 #include "wpi/nt/NetworkTableValue.hpp"
 #include "wpi/util/Logger.hpp"
-#include "wpi/util/raw_ostream.hpp"
-#include "wpi/util/timestamp.h"
+#include "wpi/util/timestamp.hpp"
 
 using namespace wpi::nt;
 using namespace wpi::nt::net;

ntcore/src/main/native/cpp/net/WebSocketConnection.cpp

@@ -13,7 +13,7 @@
 #include "wpi/util/Logger.hpp"
 #include "wpi/util/SpanExtras.hpp"
 #include "wpi/util/raw_ostream.hpp"
-#include "wpi/util/timestamp.h"
+#include "wpi/util/timestamp.hpp"
 
 using namespace wpi::nt;
 using namespace wpi::nt::net;

ntcore/src/main/native/cpp/ntcore_c.cpp

@@ -10,16 +10,14 @@
 #include <cstdlib>
 #include <cstring>
 #include <string_view>
-#include <utility>
 #include <vector>
 
 #include "Value_internal.hpp"
-#include "wpi/nt/ntcore.h"
 #include "wpi/nt/ntcore_cpp.hpp"
 #include "wpi/util/MemAlloc.hpp"
 #include "wpi/util/SmallVector.hpp"
 #include "wpi/util/json.hpp"
-#include "wpi/util/timestamp.h"
+#include "wpi/util/string.hpp"
 
 using namespace wpi::nt;
 

ntcore/src/main/native/cpp/server/ServerClient4.cpp

@@ -10,7 +10,7 @@
 #include "net/WireDecoder.hpp"
 #include "server/ServerStorage.hpp"
 #include "server/ServerTopic.hpp"
-#include "wpi/util/timestamp.h"
+#include "wpi/util/timestamp.hpp"
 
 using namespace wpi::nt::server;
 

ntcore/src/main/native/include/wpi/nt/ntcore_cpp.hpp

@@ -8,7 +8,6 @@
 
 #include <cassert>
 #include <functional>
-#include <memory>
 #include <optional>
 #include <span>
 #include <string>