New Stat: Clan Loyalty

As a clan leader myself, it would be great to have a way to numerically tell how long a certain member has been in the clan. The timer could work in days/minutes or even trophy seasons. The timer would start only when the member is actually in the clan itself and would pause if the player leaves the clan. If the player returns to the clan, the timer would resume where it left off.

Furthermore, it would be nice if the player's clan castle becomes more decorated the longer a player has been in the clan. This way, he or she could really be an "elder" and would be able to showcase his or her loyalty to the rest of the clan/friends. Of course, this option could be turned off in case the player likes the regular clan castle the way it was before.