slic3r: Fix missing BOOST_LOG_TRIVIAL declaration

src/slic3r/GUI/wxMediaCtrl3.cpp:181:23: error: ‘info’ was not declared in this scope
  181 |     BOOST_LOG_TRIVIAL(info) << msg.ToUTF8().data();
      |                       ^~~~
src/slic3r/GUI/wxMediaCtrl3.cpp:181:5: error: ‘BOOST_LOG_TRIVIAL’ was not declared in this scope
  181 |     BOOST_LOG_TRIVIAL(info) << msg.ToUTF8().data();
      |     ^~~~~~~~~~~~~~~~~

src/slic3r/GUI/wxMediaCtrl3.cpp

@@ -2,6 +2,7 @@
 #include "AVVideoDecoder.hpp"
 #include "I18N.hpp"
 #include "libslic3r/Utils.hpp"
+#include <boost/log/trivial.hpp>
 #include <wx/dcclient.h>
 #ifdef __WIN32__
 #include <versionhelpers.h>