Frontend: Call timeBeginPeriod() to increase timer resolution

Hopefully will prevent FPS fluctuations due to sleep variation.

src/duckstation/CMakeLists.txt

@@ -20,5 +20,5 @@ if(WIN32)
     d3d11_host_display.cpp
     d3d11_host_display.h
   )
-  target_link_libraries(duckstation PRIVATE d3d11.lib)
+  target_link_libraries(duckstation PRIVATE d3d11.lib winmm.lib)
 endif()