fix: Detect mov extension as video/quicktime (#7884)

Author: avelad

lib/net/networking_utils.js

@@ -88,6 +88,7 @@ shaka.net.NetworkingUtils.EXTENSIONS_TO_MIME_TYPES_ = {
   'ogg': 'audio/ogg',
   'mpg': 'video/mpeg',
   'mpeg': 'video/mpeg',
+  'mov': 'video/quicktime',
   'm3u8': 'application/x-mpegurl',
   'mpd': 'application/dash+xml',
   'ism': 'application/vnd.ms-sstr+xml',