Add the ability to add a ⭐ to a message in the #starboard channel as well as the original message

[jasonlessenich]

make the bot to add a :star: reaction in #⭐︱starboard as well and the star count to be the sum of stars on the original message and on the message in #⭐︱starboard. It's kinda awkward to have to jump to the original message to star it

→ https://canary.discord.com/channels/648956210850299986/752535909228085348/867505817506414593