Set DPI awareness for Windows

Add a windows manifest to set the DPI awareness by default:
<https://docs.microsoft.com/en-us/windows/win32/hidpi/setting-the-default-dpi-awareness-for-a-process>

Refs #40 <https://github.com/Genymobile/scrcpy/issues/40>
Fixes #2865 <https://github.com/Genymobile/scrcpy/issues/2865>

app/scrcpy-windows.rc

@@ -1,5 +1,8 @@
+#include <winuser.h>
+
 0 ICON "../data/icon.ico"
-1 VERSIONINFO
+1 RT_MANIFEST "scrcpy-windows.manifest"
+2 VERSIONINFO
 BEGIN
   BLOCK "StringFileInfo"
   BEGIN