added missing files

src/util/AttachToConsole.cpp

@@ -0,0 +1,20 @@
+#include "AttachToConsole.hpp"
+
+#ifdef USEWINSDK
+#    include <Windows.h>
+#endif
+
+namespace chatterino {
+
+void attachToConsole()
+{
+#ifdef USEWINSDK
+    if (AttachConsole(ATTACH_PARENT_PROCESS))
+    {
+        freopen("CONOUT$", "w", stdout);
+        freopen("CONOUT$", "w", stderr);
+    }
+#endif
+}
+
+}  // namespace chatterino

src/util/AttachToConsole.hpp

@@ -0,0 +1,5 @@
+#pragma once
+
+namespace chatterino {
+void attachToConsole();
+}