Add support for HLS AUDIO group

### Use case description
Currently the audio group is unavailable, when the player adaptive switch to one alternative video track, the audio does not switch the audio track defined on "AUDIO" of this video track.

Here are one example, the manifest defined 6 video tracks with main and backup stream, for each video track defined the audio group. Also defined the 18 audio tracks, for each audio group it has away, default and french options.

Currently the playback is on **main/video/1512000/index.m3u8** with **main/audio/192000_away/index.m3u8** (audio groupId - main-audio-192000)
if the playback switch to **main/video/600000/index.m3u8** because of the bandwidth reason, and the player still play the **main/audio/192000_away/index.m3u8**.

But normally the audio track should be **main/audio/128000_away/index.m3u8** (audio groupId - main-audio-128000)
I think it may be a place that can be improved.

```
#EXTM3U
#EXT-X-INDEPENDENT-SEGMENTS
#EXT-X-MEDIA:TYPE=AUDIO,URI="main/audio/64000_away/index.m3u8",GROUP-ID="main-audio-64000",NAME="away",LANGUAGE="eng",AUTOSELECT=YES,DEFAULT=NO,CHANNELS="2"
#EXT-X-MEDIA:TYPE=AUDIO,URI="main/audio/128000_away/index.m3u8",GROUP-ID="main-audio-128000",NAME="away",LANGUAGE="eng",AUTOSELECT=YES,DEFAULT=NO,CHANNELS="2"
#EXT-X-MEDIA:TYPE=AUDIO,URI="main/audio/192000_away/index.m3u8",GROUP-ID="main-audio-192000",NAME="away",LANGUAGE="eng",AUTOSELECT=YES,DEFAULT=NO,CHANNELS="2"
#EXT-X-MEDIA:TYPE=AUDIO,URI="main/audio/64000/index.m3u8",GROUP-ID="main-audio-64000",NAME="default",LANGUAGE="eng",AUTOSELECT=YES,DEFAULT=YES,CHANNELS="2"
#EXT-X-MEDIA:TYPE=AUDIO,URI="main/audio/128000/index.m3u8",GROUP-ID="main-audio-128000",NAME="default",LANGUAGE="eng",AUTOSELECT=YES,DEFAULT=YES,CHANNELS="2"
#EXT-X-MEDIA:TYPE=AUDIO,URI="main/audio/192000/index.m3u8",GROUP-ID="main-audio-192000",NAME="default",LANGUAGE="eng",AUTOSELECT=YES,DEFAULT=YES,CHANNELS="2"
#EXT-X-MEDIA:TYPE=AUDIO,URI="main/audio/64000_fr/index.m3u8",GROUP-ID="main-audio-64000",NAME="French",LANGUAGE="fra",AUTOSELECT=YES,DEFAULT=NO,CHANNELS="2"
#EXT-X-MEDIA:TYPE=AUDIO,URI="main/audio/128000_fr/index.m3u8",GROUP-ID="main-audio-128000",NAME="French",LANGUAGE="fra",AUTOSELECT=YES,DEFAULT=NO,CHANNELS="2"
#EXT-X-MEDIA:TYPE=AUDIO,URI="main/audio/192000_fr/index.m3u8",GROUP-ID="main-audio-192000",NAME="French",LANGUAGE="fra",AUTOSELECT=YES,DEFAULT=NO,CHANNELS="2"

#EXT-X-MEDIA:TYPE=AUDIO,URI="backup/audio/64000_away/index.m3u8",GROUP-ID="backup-audio-64000",NAME="away",LANGUAGE="eng",AUTOSELECT=YES,DEFAULT=NO,CHANNELS="2"
#EXT-X-MEDIA:TYPE=AUDIO,URI="backup/audio/128000_away/index.m3u8",GROUP-ID="backup-audio-128000",NAME="away",LANGUAGE="eng",AUTOSELECT=YES,DEFAULT=NO,CHANNELS="2"
#EXT-X-MEDIA:TYPE=AUDIO,URI="backup/audio/192000_away/index.m3u8",GROUP-ID="backup-audio-192000",NAME="away",LANGUAGE="eng",AUTOSELECT=YES,DEFAULT=NO,CHANNELS="2"
#EXT-X-MEDIA:TYPE=AUDIO,URI="backup/audio/64000/index.m3u8",GROUP-ID="backup-audio-64000",NAME="default",LANGUAGE="eng",AUTOSELECT=YES,DEFAULT=YES,CHANNELS="2"
#EXT-X-MEDIA:TYPE=AUDIO,URI="backup/audio/128000/index.m3u8",GROUP-ID="backup-audio-128000",NAME="default",LANGUAGE="eng",AUTOSELECT=YES,DEFAULT=YES,CHANNELS="2"
#EXT-X-MEDIA:TYPE=AUDIO,URI="backup/audio/192000/index.m3u8",GROUP-ID="backup-audio-192000",NAME="default",LANGUAGE="eng",AUTOSELECT=YES,DEFAULT=YES,CHANNELS="2"
#EXT-X-MEDIA:TYPE=AUDIO,URI="backup/audio/64000_fr/index.m3u8",GROUP-ID="backup-audio-64000",NAME="French",LANGUAGE="fra",AUTOSELECT=YES,DEFAULT=NO,CHANNELS="2"
#EXT-X-MEDIA:TYPE=AUDIO,URI="backup/audio/128000_fr/index.m3u8",GROUP-ID="backup-audio-128000",NAME="French",LANGUAGE="fra",AUTOSELECT=YES,DEFAULT=NO,CHANNELS="2"
#EXT-X-MEDIA:TYPE=AUDIO,URI="backup/audio/192000_fr/index.m3u8",GROUP-ID="backup-audio-192000",NAME="French",LANGUAGE="fra",AUTOSELECT=YES,DEFAULT=NO,CHANNELS="2"

#EXT-X-STREAM-INF:BANDWIDTH=1965637,AVERAGE-BANDWIDTH=1694815,FRAME-RATE=25,PROGRAM-ID=1,CODECS="avc1.640029,mp4a.40.2",RESOLUTION=1280x720,AUDIO="main-audio-192000"
main/video/1512000/index.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=1965637,AVERAGE-BANDWIDTH=1694815,FRAME-RATE=25,PROGRAM-ID=1,CODECS="avc1.640029,mp4a.40.2",RESOLUTION=1280x720,AUDIO="backup-audio-192000"
backup/video/1512000/index.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=936650,AVERAGE-BANDWIDTH=767625,FRAME-RATE=25,PROGRAM-ID=1,CODECS="avc1.42c01f,mp4a.40.2",RESOLUTION=640x360,AUDIO="main-audio-128000"
main/video/600000/index.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=936650,AVERAGE-BANDWIDTH=767625,FRAME-RATE=25,PROGRAM-ID=1,CODECS="avc1.42c01f,mp4a.40.2",RESOLUTION=640x360,AUDIO="backup-audio-128000"
backup/video/600000/index.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=552324,AVERAGE-BANDWIDTH=446593,FRAME-RATE=25,PROGRAM-ID=1,CODECS="avc1.42c01f,mp4a.40.2",RESOLUTION=512x288,AUDIO="main-audio-64000"
main/video/348000/index.m3u8
#EXT-X-STREAM-INF:BANDWIDTH=552324,AVERAGE-BANDWIDTH=446593,FRAME-RATE=25,PROGRAM-ID=1,CODECS="avc1.42c01f,mp4a.40.2",RESOLUTION=512x288,AUDIO="backup-audio-64000"
backup/video/348000/index.m3u8

```