[Improvement Plan] : Fetch all friends

[sam5558]

In case the friend list has more than 100 friends, it saturates to the first page of MAL Friends (that has 100 friends).
Need to parse all friends pages
See the user section of Jikan documentation : https://jikan.docs.apiary.io/#reference/0/user
(../friends/ ../friends/2 ..friends/3 etc)