Friends System

POST /api/friends/requests
{
  "username": "friend#1234"
}

POST /api/friends/requests/:friendship_id/accept

POST /api/friends/requests/:friendship_id/decline

GET /api/friends/requests/pending

GET /api/friends/requests/outgoing

GET /api/friends

GET /api/dms/:current_user_id/:other_user_id

POST /api/dms/:user_id/:dm_id/messages
{
  "content": "Hey! How are you?"
}

POST /api/friends/block/:user_id

DELETE /api/friends/block/:user_id

GET /api/friends/blocked

DELETE /api/friends/:friend_user_id

PATCH /api/users/:user_id/privacy
{
  "allow_friend_requests": true,
  "allow_dms_from_non_friends": false,
  "show_online_status": true
}