Shoutout command response

- works with or without @
!shoutout @Username
!shoutout Username

Either way it still...
- tags them in chat
- makes a valid twitch link

It works without https:// on Windows and Android, but I don't have an iPhone to test.
So I have provided versions with https://

Instructional Video: https://youtu.be/PLLbJHG9CVM

Check out @${channel ${1}}, they were playing ${game ${1}} at twitch.tv/${channel ${1}}

If you need https://

Check out @${channel ${1}}, they were playing ${game ${1}} at https://twitch.tv/${channel ${1}}