added opening animation to chest, and opening effect to door

MrBigsock/Assets/Code/InteractionSystem/Chest.cs

MrBigsock/Assets/Code/InteractionSystem/Door.cs

MrBigsock/Assets/Prefabs/BigSock.prefab

MrBigsock/Assets/Scenes/example.unity

MrBigsock/Assets/Sprites/Item/Canvas.controller

MrBigsock/Assets/Sprites/Item/Canvas.controller.meta

MrBigsock/Assets/Sprites/Item/ClosedChest.controller

MrBigsock/Assets/Sprites/Item/ClosedChest.controller.meta

MrBigsock/Assets/Sprites/Item/ClosedChest.prefab

MrBigsock/Assets/Sprites/Item/ClosedDoor.controller

MrBigsock/Assets/Sprites/Item/ClosedDoor.controller.meta

MrBigsock/Assets/Sprites/Item/ClosedDoor.prefab

MrBigsock/Assets/Sprites/Item/OpeningGoldChest.anim

MrBigsock/Assets/Sprites/Item/OpeningGoldChest.anim.meta

MrBigsock/Assets/Sprites/Item/tilesetNice.png.meta