possible sword blocking implementation

Reintroduce sword blocking back into the game by giving it the same functionality (right clicking while holding a sword to block a bit of damage) as it had in the game previously. To make it work with shields, have shields take priority over sword blocking when held in the offhand so they can both exist while retaining the ability to pair swords and shields. this would also give the sword an advantage over an axe because using a sword with a totem in your off hand still allows you to block some damage. for bedrock edition maybe it could just be activated by crouching and just give the same shield priority as mentioned earlier.