Add support to play webm media files

src/constants/filefilterconstants.h

@@ -27,7 +27,7 @@ constexpr char kAllFilesFilterSpec[] = QT_TRANSLATE_NOOP("FileFilter", "All File
 constexpr char kFileFilter[] =
     "*.wav *.flac *.wv *.ogg *.oga *.opus *.spx *.ape *.mpc "
     "*.mp2 *.mp3 *.m4a *.mp4 *.aac *.asf *.asx *.wma "
-    "*.aif *.aiff *.mka *.tta *.dsf *.dsd "
+    "*.aif *.aiff *.mka *.tta *.dsf *.dsd *.webm "
     "*.cue *.m3u *.m3u8 *.pls *.xspf *.asxini "
     "*.ac3 *.dts "
     "*.mod *.s3m *.xm *.it "

src/core/song.cpp

@@ -243,6 +243,7 @@ const QStringList Song::kAcceptedExtensions = QStringList() << u"wav"_s
                                                             << u"tta"_s
                                                             << u"dsf"_s
                                                             << u"dsd"_s
+                                                            << u"webm"_s
                                                             << u"ac3"_s
                                                             << u"dts"_s
                                                             << u"spc"_s