chore: split platform code per translation unit

Author: dmehala

src/datadog/platform_util_unix.cpp

@@ -1,3 +1,4 @@
+<<<<<<<< HEAD:src/datadog/platform_util_unix.cpp
 #include <errno.h>
 #include <fcntl.h>
 #include <pthread.h>
@@ -276,3 +277,12 @@ Optional<ContainerID> get_id() {
 
 }  // namespace tracing
 }  // namespace datadog
+========
+#ifdef _MSC_VER
+#include "platform_util_windows.cpp"
+#elif defined(__APPLE__) || defined(__FreeBSD__)
+#include "platform_util_darwin.cpp"
+#else
+#include "platform_util_unix.cpp"
+#endif
+>>>>>>>> de34fe8 (chore: split platform code per translation unit):src/datadog/platform_util.cpp

src/datadog/platform_util_windows.cpp

@@ -21,7 +21,7 @@ std::tuple<std::string, std::string> get_windows_info() {
   // application manifest, which is the lowest version supported by the
   // application. Use `RtlGetVersion` to obtain the accurate OS version
   // regardless of the manifest.
-  using RtlGetVersion = auto(*)(LPOSVERSIONINFOEXW)->NTSTATUS;
+  using RtlGetVersion = auto (*)(LPOSVERSIONINFOEXW)->NTSTATUS;
 
   RtlGetVersion func =
       (RtlGetVersion)GetProcAddress(GetModuleHandleA("ntdll"), "RtlGetVersion");