plz add Music support in MessageType.ts #111
Description
plz add Music support.
<?xml version="1.0"?>
<msg>
<appmsg appid="" sdkver="0">
<title>【620】旷野吗哪</title>
<des>点击▶️收听 公众号:云彩助手 每日更新</des>
<action />
<type>3</type>
<showtype>0</showtype>
<content />
<url>http://lywx2018.com/ly/audio/2020/mw/mw200817.mp3</url>
<lowurl>http://lywx2018.com/ly/audio/2020/mw/mw200817.mp3</lowurl>
<dataurl>http://lywx2018.com/ly/audio/2020/mw/mw200817.mp3</dataurl>
<lowdataurl />
<appattach>
<totallen>0</totallen>
<attachid />
<emoticonmd5></emoticonmd5>
<fileext />
</appattach>
<extinfo />
<sourceusername />
<sourcedisplayname />
</appmsg>
<fromusername><![CDATA[gh_c2138e687da3]]></fromusername>
<appinfo>
<version>0</version>
<appname><![CDATA[云彩助手]]></appname>
<isforceupdate>1</isforceupdate>
</appinfo>
</msg>