Animal cage and gift block

New block: cage
-Can be used to store small animals like cats, chicken, parrots, rabbits or babies of big animals by right-clicking with the cage over the small mob.
-Can be opened with right-click ( the animal escapes) or broken and taken as an item.

New block: Gift
-A chest-like block that can only be opened by the specified player or with a passcode.
-The Gift block is blast-proof and fireproof, but a player can only place a maximum of one gift per other player at a time
-Can contain chests and small friendly animals
-The pets can change owner this way
-A player can only store pets that he/she/they own
-The gift must be placed on top of a chest or small animal in order to store it, then the gift block can be broken and taken as an item.
-Once the animal or chest has been "wrapped", an interface will ask the player to specify the name of the receiver player or maybe a passcode.