Add RelationshipPruner

[cheesesamwich]

RelationshipPruner allows you to easily go through and remove your friends/servers (useful, especially if you have a lot). You can view relevant information to help you make the decision There may be some parts that could be improved, mainly the api requests in the guild prune modal- they should be fine but it's probably worth looking through.

[cheesesamwich]

I forgot to mention, right now it has an issue with the mutual servers/last message date, it only loads if you have loaded the user in your session (i'll fix soon)

[Z1xus]

thats very cool 👏 vouch

[CrytosDev]

This is a really cool idea