refactor(logging): separate logging from main (#2110)

src/platform/windows/nvprefs/nvprefs_common.cpp

@@ -1,6 +1,6 @@
 // local includes
 #include "nvprefs_common.h"
-#include "src/main.h"  // sunshine boost::log severity levels
+#include "src/logging.h"
 
 // read user override preferences from global sunshine config
 #include "src/config.h"

src/platform/windows/nvprefs/nvprefs_interface.cpp

@@ -1,7 +1,9 @@
+// standard includes
+#include <cassert>
+
 // local includes
-#include "nvprefs_interface.h"
 #include "driver_settings.h"
-#include "src/main.h"  // main include for assert
+#include "nvprefs_interface.h"
 #include "undo_file.h"
 
 namespace {