Gives arms to armor stands

Features

1. Automatically adds arms to armor stands when placed

2. [1.21+] Shift + right click an armor stand to show / hide the arms

3. [1.21.6+] Settings with `/trigger armor_stand_arms.config`

Remove all arms

/function armor_stand_arms:app/arms/remove_all

Show all arms

/function armor_stand_arms:app/arms/show_all