Add `description` field to the payload

[neSpecc]

Some events have additional information right at the title in parentless.

For example:

Loading chunk 46 failed. (error: https://vc-static-bf19cf1.gcdn.co/static/build/vc.ru/search.f28511b7f4e02dfaf1d0.min.js)

undefined is not a constructor (evaluating 'new o')

undefined is not an object (evaluating 'document.getElementsByTagName('video')[0].webkitExitFullScreen')

undefined is not a constructor (evaluating 'new n({user:t,container:u,appComponent:i,socketUrl:window.__socket_url+"m:"+t.m_hash,onChannelOpen:t=>{c(t)},isMiniMessenger:!0})')

You need to cut such a description and put it to the separated field description