Support for 3DS Friends

[hauntii]

This PR adds support for most methods of Friends for the 3DS.

Methods:

• [X] UpdateProfile
• [X] UpdateMii
• [ ] UpdateMiiList
• [ ] UpdatePlayedGames
• [X] UpdatePreference
• [X] GetFriendMii
• [ ] GetFriendMiiList
• [ ] IsActiveGame
• [X] GetPrincipalIDByLocalFriendCode (Stubbed)
• [ ] GetFriendRelationships
• [X] AddFriendByPrincipalID
• [X] RemoveFriendByLocalFriendCode (Stubbed)
• [X] RemoveFriendByPrincipalID
• [X] GetAllFriends
• [ ] UpdateBlacklist
• [X] SyncFriend
• [X] UpdatePresence
• [X] UpdateFavoriteGameKey
• [X] UpdateComment
• [ ] UpdatePicture
• [X] GetFriendPresence
• [X] GetFriendComment
• [ ] GetFriendPicture
• [X] GetFriendPersistentInfo
• [ ] SendInvitation

All methods added have been extensively tested. Local and Internet friends work correctly.

The global for Presence has been renamed to PresenceV2, and a Presence global has been added in its place for 3DS presence.

The README has been updated to reflect the current status of the server as well.

Notifications that do not have an associated file have been placed in a notifications.go file in their respective platform folders.

Here are some demo videos:

Demo Videos

Internet https://user-images.githubusercontent.com/57009359/221081053-0e3168a6-a7a7-4dec-a181-74433a042c3a.mp4 Local https://user-images.githubusercontent.com/57009359/221081063-528aa3ab-777f-4870-9799-ad17bc4a2a3c.mp4 Presence https://user-images.githubusercontent.com/57009359/221081077-38057155-4cd2-4831-8bd9-a816dfb99b5e.mp4

[jonbarrow]

Looks awesome!